Illinois Interactive Heat Zones Map
| Zone 1 < 1 days > 86°F | Zone 2 1 - 7 days > 86°F | Zone 3 8 - 14 days > 86°F | Zone 4 15 - 30 days > 86°F |
| Zone 5 31 - 45 days > 86°F | Zone 6 46 - 60 days > 86°F | Zone 7 61 - 90 days > 86°F | Zone 8 91 - 120 days > 86°F |
To assist Illinois gardeners, Plantmaps has derived zones indicating the average number of days each year that an area experiences temperatures over 86 degrees F. These zones are derived from the historical climate data from the National Weather Service.
Heat Zone Maps for Neighboring States and Provinces
Related Illinois Maps:
Heat Zones for Cities and Towns in Illinois
| Location | Heat Zone |
|---|---|
| Abingdon | Heat Zone 3 8 - 14 days > 86°F |
| Adair | Heat Zone 5 31 - 45 days > 86°F |
| Addieville | Heat Zone 6 46 - 60 days > 86°F |
| Addison | Heat Zone 2 1 - 7 days > 86°F |
| Adeline | Heat Zone 1 < 1 days > 86°F |
| Adrian | Heat Zone 4 15 - 30 days > 86°F |
| Akin | Heat Zone 7 61 - 90 days > 86°F |
| Akron | Heat Zone 2 1 - 7 days > 86°F |
| Albany | Heat Zone 2 1 - 7 days > 86°F |
| Albers | Heat Zone 6 46 - 60 days > 86°F |
| Albion | Heat Zone 7 61 - 90 days > 86°F |
| Alden | Heat Zone 1 < 1 days > 86°F |
| Aledo | Heat Zone 4 15 - 30 days > 86°F |
| Alexander | Heat Zone 5 31 - 45 days > 86°F |
| Alexis | Heat Zone 4 15 - 30 days > 86°F |
| Algonquin | Heat Zone 1 < 1 days > 86°F |
| Alhambra | Heat Zone 7 61 - 90 days > 86°F |
| Allendale | Heat Zone 7 61 - 90 days > 86°F |
| Allenville | Heat Zone 5 31 - 45 days > 86°F |
| Allerton | Heat Zone 4 15 - 30 days > 86°F |
| Alma | Heat Zone 7 61 - 90 days > 86°F |
| Alorton | Heat Zone 7 61 - 90 days > 86°F |
| Alpha | Heat Zone 2 1 - 7 days > 86°F |
| Alsey | Heat Zone 6 46 - 60 days > 86°F |
| Alsip | Heat Zone 1 < 1 days > 86°F |
| Altamont | Heat Zone 6 46 - 60 days > 86°F |
| Alto Pass | Heat Zone 7 61 - 90 days > 86°F |
| Alton | Heat Zone 6 46 - 60 days > 86°F |
| Altona | Heat Zone 3 8 - 14 days > 86°F |
| Alvin | Heat Zone 4 15 - 30 days > 86°F |
| Amboy | Heat Zone 2 1 - 7 days > 86°F |
| Anchor | Heat Zone 2 1 - 7 days > 86°F |
| Ancona | Heat Zone 4 15 - 30 days > 86°F |
| Andalusia | Heat Zone 2 1 - 7 days > 86°F |
| Andover | Heat Zone 2 1 - 7 days > 86°F |
| Anna | Heat Zone 7 61 - 90 days > 86°F |
| Annapolis | Heat Zone 6 46 - 60 days > 86°F |
| Annawan | Heat Zone 2 1 - 7 days > 86°F |
| Antioch | Heat Zone 1 < 1 days > 86°F |
| Apple River | Heat Zone 1 < 1 days > 86°F |
| Arcola | Heat Zone 5 31 - 45 days > 86°F |
| Arenzville | Heat Zone 6 46 - 60 days > 86°F |
| Argenta | Heat Zone 5 31 - 45 days > 86°F |
| Arlington | Heat Zone 3 8 - 14 days > 86°F |
| Arlington Heights | Heat Zone 1 < 1 days > 86°F |
| Armington | Heat Zone 5 31 - 45 days > 86°F |
| Armstrong | Heat Zone 4 15 - 30 days > 86°F |
| Aroma Park | Heat Zone 2 1 - 7 days > 86°F |
| Arrowsmith | Heat Zone 3 8 - 14 days > 86°F |
| Arthur | Heat Zone 5 31 - 45 days > 86°F |
| Ashkum | Heat Zone 2 1 - 7 days > 86°F |
| Ashland | Heat Zone 5 31 - 45 days > 86°F |
| Ashley | Heat Zone 6 46 - 60 days > 86°F |
| Ashmore | Heat Zone 5 31 - 45 days > 86°F |
| Ashton | Heat Zone 1 < 1 days > 86°F |
| Assumption | Heat Zone 5 31 - 45 days > 86°F |
| Astoria | Heat Zone 5 31 - 45 days > 86°F |
| Athens | Heat Zone 4 15 - 30 days > 86°F |
| Atkinson | Heat Zone 2 1 - 7 days > 86°F |
| Atlanta | Heat Zone 5 31 - 45 days > 86°F |
| Atlas | Heat Zone 6 46 - 60 days > 86°F |
| Atwater | Heat Zone 6 46 - 60 days > 86°F |
| Atwood | Heat Zone 5 31 - 45 days > 86°F |
| Auburn | Heat Zone 5 31 - 45 days > 86°F |
| Augusta | Heat Zone 4 15 - 30 days > 86°F |
| Aurora | Heat Zone 1 < 1 days > 86°F |
| Ava | Heat Zone 7 61 - 90 days > 86°F |
| Aviston | Heat Zone 6 46 - 60 days > 86°F |
| Avon | Heat Zone 4 15 - 30 days > 86°F |
| Baileyville | Heat Zone 1 < 1 days > 86°F |
| Baldwin | Heat Zone 7 61 - 90 days > 86°F |
| Banner | Heat Zone 5 31 - 45 days > 86°F |
| Bannockburn | Heat Zone 1 < 1 days > 86°F |
| Bardolph | Heat Zone 5 31 - 45 days > 86°F |
| Barnhill | Heat Zone 7 61 - 90 days > 86°F |
| Barrington | Heat Zone 1 < 1 days > 86°F |
| Barrington Hills | Heat Zone 1 < 1 days > 86°F |
| Barry | Heat Zone 5 31 - 45 days > 86°F |
| Barstow | Heat Zone 1 < 1 days > 86°F |
| Bartelso | Heat Zone 5 31 - 45 days > 86°F |
| Bartlett | Heat Zone 2 1 - 7 days > 86°F |
| Bartonville | Heat Zone 3 8 - 14 days > 86°F |
| Basco | Heat Zone 4 15 - 30 days > 86°F |
| Batavia | Heat Zone 2 1 - 7 days > 86°F |
| Batchtown | Heat Zone 7 61 - 90 days > 86°F |
| Bath | Heat Zone 5 31 - 45 days > 86°F |
| Bay View Garden | Heat Zone 3 8 - 14 days > 86°F |
| Baylis | Heat Zone 5 31 - 45 days > 86°F |
| Beach Park | Heat Zone 1 < 1 days > 86°F |
| Beardstown | Heat Zone 5 31 - 45 days > 86°F |
| Beason | Heat Zone 5 31 - 45 days > 86°F |
| Beaucoup | Heat Zone 6 46 - 60 days > 86°F |
| Beaverville | Heat Zone 2 1 - 7 days > 86°F |
| Beckemeyer | Heat Zone 5 31 - 45 days > 86°F |
| Bedford Park | Heat Zone 1 < 1 days > 86°F |
| Beecher | Heat Zone 1 < 1 days > 86°F |
| Beecher City | Heat Zone 6 46 - 60 days > 86°F |
| Belgium | Heat Zone 5 31 - 45 days > 86°F |
| Belknap | Heat Zone 7 61 - 90 days > 86°F |
| Belle Prairie City | Heat Zone 7 61 - 90 days > 86°F |
| Belle Rive | Heat Zone 7 61 - 90 days > 86°F |
| Belleville | Heat Zone 7 61 - 90 days > 86°F |
| Bellevue | Heat Zone 3 8 - 14 days > 86°F |
| Bellflower | Heat Zone 3 8 - 14 days > 86°F |
| Bellmont | Heat Zone 7 61 - 90 days > 86°F |
| Bellwood | Heat Zone 2 1 - 7 days > 86°F |
| Belvidere | Heat Zone 1 < 1 days > 86°F |
| Bement | Heat Zone 4 15 - 30 days > 86°F |
| Benld | Heat Zone 7 61 - 90 days > 86°F |
| Bensenville | Heat Zone 1 < 1 days > 86°F |
| Benson | Heat Zone 4 15 - 30 days > 86°F |
| Bentley | Heat Zone 5 31 - 45 days > 86°F |
| Benton | Heat Zone 7 61 - 90 days > 86°F |
| Berkeley | Heat Zone 2 1 - 7 days > 86°F |
| Berlin | Heat Zone 5 31 - 45 days > 86°F |
| Berwick | Heat Zone 4 15 - 30 days > 86°F |
| Berwyn | Heat Zone 1 < 1 days > 86°F |
| Bethalto | Heat Zone 6 46 - 60 days > 86°F |
| Bethany | Heat Zone 6 46 - 60 days > 86°F |
| Big Rock | Heat Zone 1 < 1 days > 86°F |
| Biggsville | Heat Zone 4 15 - 30 days > 86°F |
| Bingham | Heat Zone 6 46 - 60 days > 86°F |
| Birds | Heat Zone 6 46 - 60 days > 86°F |
| Birmingham | Heat Zone 5 31 - 45 days > 86°F |
| Bishop Hill | Heat Zone 4 15 - 30 days > 86°F |
| Bismarck | Heat Zone 4 15 - 30 days > 86°F |
| Blackstone | Heat Zone 3 8 - 14 days > 86°F |
| Blandinsville | Heat Zone 5 31 - 45 days > 86°F |
| Bloomingdale | Heat Zone 2 1 - 7 days > 86°F |
| Bloomington | Heat Zone 4 15 - 30 days > 86°F |
| Blue Island | Heat Zone 1 < 1 days > 86°F |
| Blue Mound | Heat Zone 5 31 - 45 days > 86°F |
| Blue Ridge | Heat Zone 3 8 - 14 days > 86°F |
| Bluff Springs | Heat Zone 5 31 - 45 days > 86°F |
| Bluffs | Heat Zone 6 46 - 60 days > 86°F |
| Bluford | Heat Zone 7 61 - 90 days > 86°F |
| Boles | Heat Zone 7 61 - 90 days > 86°F |
| Bolingbrook | Heat Zone 3 8 - 14 days > 86°F |
| Bondville | Heat Zone 3 8 - 14 days > 86°F |
| Bone Gap | Heat Zone 7 61 - 90 days > 86°F |
| Bonfield | Heat Zone 2 1 - 7 days > 86°F |
| Bonnie | Heat Zone 7 61 - 90 days > 86°F |
| Boody | Heat Zone 6 46 - 60 days > 86°F |
| Boulder Hill | Heat Zone 1 < 1 days > 86°F |
| Bourbonnais | Heat Zone 2 1 - 7 days > 86°F |
| Bowen | Heat Zone 4 15 - 30 days > 86°F |
| Boynton | Heat Zone 5 31 - 45 days > 86°F |
| Braceville | Heat Zone 2 1 - 7 days > 86°F |
| Bradford | Heat Zone 2 1 - 7 days > 86°F |
| Bradley | Heat Zone 2 1 - 7 days > 86°F |
| Braidwood | Heat Zone 2 1 - 7 days > 86°F |
| Breese | Heat Zone 6 46 - 60 days > 86°F |
| Bridgeport | Heat Zone 7 61 - 90 days > 86°F |
| Bridgeview | Heat Zone 1 < 1 days > 86°F |
| Brighton | Heat Zone 6 46 - 60 days > 86°F |
| Brimfield | Heat Zone 2 1 - 7 days > 86°F |
| Bristol | Heat Zone 1 < 1 days > 86°F |
| Broadlands | Heat Zone 4 15 - 30 days > 86°F |
| Broadview | Heat Zone 2 1 - 7 days > 86°F |
| Broadwell | Heat Zone 5 31 - 45 days > 86°F |
| Brocton | Heat Zone 6 46 - 60 days > 86°F |
| Brookfield | Heat Zone 2 1 - 7 days > 86°F |
| Brooklyn | Heat Zone 7 61 - 90 days > 86°F |
| Brookport | Heat Zone 7 61 - 90 days > 86°F |
| Broughton | Heat Zone 7 61 - 90 days > 86°F |
| Browning | Heat Zone 5 31 - 45 days > 86°F |
| Browns | Heat Zone 7 61 - 90 days > 86°F |
| Brownstown | Heat Zone 6 46 - 60 days > 86°F |
| Brussels | Heat Zone 7 61 - 90 days > 86°F |
| Bryant | Heat Zone 5 31 - 45 days > 86°F |
| Buckingham | Heat Zone 2 1 - 7 days > 86°F |
| Buckley | Heat Zone 2 1 - 7 days > 86°F |
| Buckner | Heat Zone 7 61 - 90 days > 86°F |
| Buda | Heat Zone 2 1 - 7 days > 86°F |
| Buffalo | Heat Zone 5 31 - 45 days > 86°F |
| Buffalo Grove | Heat Zone 1 < 1 days > 86°F |
| Buffalo Hart | Heat Zone 4 15 - 30 days > 86°F |
| Buffalo Prairie | Heat Zone 4 15 - 30 days > 86°F |
| Bull Valley | Heat Zone 1 < 1 days > 86°F |
| Bulpitt | Heat Zone 4 15 - 30 days > 86°F |
| Buncombe | Heat Zone 7 61 - 90 days > 86°F |
| Bunker Hill | Heat Zone 6 46 - 60 days > 86°F |
| Burbank | Heat Zone 1 < 1 days > 86°F |
| Bureau | Heat Zone 3 8 - 14 days > 86°F |
| Burlington | Heat Zone 1 < 1 days > 86°F |
| Burnham | Heat Zone 1 < 1 days > 86°F |
| Burnside | Heat Zone 5 31 - 45 days > 86°F |
| Burnt Prairie | Heat Zone 7 61 - 90 days > 86°F |
| Burr Ridge | Heat Zone 2 1 - 7 days > 86°F |
| Bush | Heat Zone 7 61 - 90 days > 86°F |
| Bushnell | Heat Zone 4 15 - 30 days > 86°F |
| Butler | Heat Zone 7 61 - 90 days > 86°F |
| Byron | Heat Zone 1 < 1 days > 86°F |
| Cabery | Heat Zone 2 1 - 7 days > 86°F |
| Cache | Heat Zone 7 61 - 90 days > 86°F |
| Cahokia | Heat Zone 7 61 - 90 days > 86°F |
| Cairo | Heat Zone 7 61 - 90 days > 86°F |
| Caledonia | Heat Zone 1 < 1 days > 86°F |
| Calhoun | Heat Zone 7 61 - 90 days > 86°F |
| Calumet City | Heat Zone 1 < 1 days > 86°F |
| Calumet Park | Heat Zone 1 < 1 days > 86°F |
| Camargo | Heat Zone 5 31 - 45 days > 86°F |
| Cambria | Heat Zone 7 61 - 90 days > 86°F |
| Cambridge | Heat Zone 2 1 - 7 days > 86°F |
| Camden | Heat Zone 5 31 - 45 days > 86°F |
| Cameron | Heat Zone 4 15 - 30 days > 86°F |
| Camp Grove | Heat Zone 3 8 - 14 days > 86°F |
| Camp Point | Heat Zone 4 15 - 30 days > 86°F |
| Campbell Hill | Heat Zone 7 61 - 90 days > 86°F |
| Campus | Heat Zone 2 1 - 7 days > 86°F |
| Canton | Heat Zone 5 31 - 45 days > 86°F |
| Cantrall | Heat Zone 4 15 - 30 days > 86°F |
| Capron | Heat Zone 1 < 1 days > 86°F |
| Carbon Cliff | Heat Zone 1 < 1 days > 86°F |
| Carbon Hill | Heat Zone 2 1 - 7 days > 86°F |
| Carbondale | Heat Zone 7 61 - 90 days > 86°F |
| Carlinville | Heat Zone 7 61 - 90 days > 86°F |
| Carlock | Heat Zone 4 15 - 30 days > 86°F |
| Carlyle | Heat Zone 5 31 - 45 days > 86°F |
| Carman | Heat Zone 4 15 - 30 days > 86°F |
| Carmi | Heat Zone 7 61 - 90 days > 86°F |
| Carol Stream | Heat Zone 3 8 - 14 days > 86°F |
| Carpentersville | Heat Zone 1 < 1 days > 86°F |
| Carrier Mills | Heat Zone 7 61 - 90 days > 86°F |
| Carrollton | Heat Zone 6 46 - 60 days > 86°F |
| Carterville | Heat Zone 7 61 - 90 days > 86°F |
| Carthage | Heat Zone 4 15 - 30 days > 86°F |
| Cary | Heat Zone 1 < 1 days > 86°F |
| Casey | Heat Zone 5 31 - 45 days > 86°F |
| Caseyville | Heat Zone 7 61 - 90 days > 86°F |
| Castleton | Heat Zone 2 1 - 7 days > 86°F |
| Catlin | Heat Zone 5 31 - 45 days > 86°F |
| Cave-in-Rock | Heat Zone 7 61 - 90 days > 86°F |
| Cazenovia | Heat Zone 4 15 - 30 days > 86°F |
| Cedar Point | Heat Zone 3 8 - 14 days > 86°F |
| Cedarville | Heat Zone 1 < 1 days > 86°F |
| Central City | Heat Zone 6 46 - 60 days > 86°F |
| Centralia | Heat Zone 6 46 - 60 days > 86°F |
| Centreville | Heat Zone 7 61 - 90 days > 86°F |
| Cerro Gordo | Heat Zone 5 31 - 45 days > 86°F |
| Chadwick | Heat Zone 2 1 - 7 days > 86°F |
| Chambersburg | Heat Zone 6 46 - 60 days > 86°F |
| Champaign | Heat Zone 2 1 - 7 days > 86°F |
| Chana | Heat Zone 1 < 1 days > 86°F |
| Chandlerville | Heat Zone 5 31 - 45 days > 86°F |
| Channahon | Heat Zone 2 1 - 7 days > 86°F |
| Channel Lake | Heat Zone 1 < 1 days > 86°F |
| Chapin | Heat Zone 6 46 - 60 days > 86°F |
| Charleston | Heat Zone 5 31 - 45 days > 86°F |
| Charlotte | Heat Zone 3 8 - 14 days > 86°F |
| Chatham | Heat Zone 5 31 - 45 days > 86°F |
| Chatsworth | Heat Zone 3 8 - 14 days > 86°F |
| Chebanse | Heat Zone 2 1 - 7 days > 86°F |
| Chemung | Heat Zone 1 < 1 days > 86°F |
| Chenoa | Heat Zone 2 1 - 7 days > 86°F |
| Cherry | Heat Zone 3 8 - 14 days > 86°F |
| Cherry Valley | Heat Zone 1 < 1 days > 86°F |
| Chester | Heat Zone 7 61 - 90 days > 86°F |
| Chesterfield | Heat Zone 6 46 - 60 days > 86°F |
| Chestnut | Heat Zone 5 31 - 45 days > 86°F |
| Chestnut Mountain Resort | Heat Zone 1 < 1 days > 86°F |
| Chicago | Heat Zone 1 < 1 days > 86°F |
| Chicago / Northerly Island | Heat Zone 1 < 1 days > 86°F |
| Chicago Heights | Heat Zone 1 < 1 days > 86°F |
| Chicago O'Hare International | Heat Zone 1 < 1 days > 86°F |
| Chicago Ridge | Heat Zone 1 < 1 days > 86°F |
| Chicago/Midway Arpt | Heat Zone 1 < 1 days > 86°F |
| Chicago/O'Hare International Airport | Heat Zone 1 < 1 days > 86°F |
| Chillicothe | Heat Zone 4 15 - 30 days > 86°F |
| Chrisman | Heat Zone 5 31 - 45 days > 86°F |
| Christopher | Heat Zone 7 61 - 90 days > 86°F |
| Cicero | Heat Zone 1 < 1 days > 86°F |
| Cisco | Heat Zone 5 31 - 45 days > 86°F |
| Cisne | Heat Zone 7 61 - 90 days > 86°F |
| Cissna Park | Heat Zone 2 1 - 7 days > 86°F |
| Clare | Heat Zone 1 < 1 days > 86°F |
| Claremont | Heat Zone 7 61 - 90 days > 86°F |
| Clarendon Hills | Heat Zone 2 1 - 7 days > 86°F |
| Clarksburg | Heat Zone 6 46 - 60 days > 86°F |
| Clay City | Heat Zone 7 61 - 90 days > 86°F |
| Clayton | Heat Zone 4 15 - 30 days > 86°F |
| Claytonville | Heat Zone 3 8 - 14 days > 86°F |
| Clear Lake | Heat Zone 4 15 - 30 days > 86°F |
| Cleveland | Heat Zone 1 < 1 days > 86°F |
| Clifton | Heat Zone 2 1 - 7 days > 86°F |
| Clinton | Heat Zone 4 15 - 30 days > 86°F |
| Coal City | Heat Zone 2 1 - 7 days > 86°F |
| Coal Valley | Heat Zone 2 1 - 7 days > 86°F |
| Coalton | Heat Zone 5 31 - 45 days > 86°F |
| Coatsburg | Heat Zone 4 15 - 30 days > 86°F |
| Cobden | Heat Zone 7 61 - 90 days > 86°F |
| Coello | Heat Zone 7 61 - 90 days > 86°F |
| Coffeen | Heat Zone 7 61 - 90 days > 86°F |
| Colchester | Heat Zone 5 31 - 45 days > 86°F |
| Coldbrook | Heat Zone 4 15 - 30 days > 86°F |
| Coleta | Heat Zone 2 1 - 7 days > 86°F |
| Colfax | Heat Zone 2 1 - 7 days > 86°F |
| Collinsville | Heat Zone 7 61 - 90 days > 86°F |
| Collison | Heat Zone 4 15 - 30 days > 86°F |
| Colona | Heat Zone 2 1 - 7 days > 86°F |
| Colp | Heat Zone 7 61 - 90 days > 86°F |
| Columbia | Heat Zone 7 61 - 90 days > 86°F |
| Columbus | Heat Zone 4 15 - 30 days > 86°F |
| Colusa | Heat Zone 4 15 - 30 days > 86°F |
| Como | Heat Zone 3 8 - 14 days > 86°F |
| Compton | Heat Zone 1 < 1 days > 86°F |
| Concord | Heat Zone 6 46 - 60 days > 86°F |
| Congerville | Heat Zone 4 15 - 30 days > 86°F |
| Cooksville | Heat Zone 3 8 - 14 days > 86°F |
| Coral | Heat Zone 1 < 1 days > 86°F |
| Cordova | Heat Zone 2 1 - 7 days > 86°F |
| Cornell | Heat Zone 3 8 - 14 days > 86°F |
| Cornland | Heat Zone 5 31 - 45 days > 86°F |
| Cortland | Heat Zone 1 < 1 days > 86°F |
| Cottage Hills | Heat Zone 6 46 - 60 days > 86°F |
| Cotton Hill | Heat Zone 4 15 - 30 days > 86°F |
| Coulterville | Heat Zone 7 61 - 90 days > 86°F |
| Country Club Hills | Heat Zone 1 < 1 days > 86°F |
| Countryside | Heat Zone 2 1 - 7 days > 86°F |
| Cowden | Heat Zone 6 46 - 60 days > 86°F |
| Coyne Center | Heat Zone 2 1 - 7 days > 86°F |
| Crab Orchard | Heat Zone 5 31 - 45 days > 86°F |
| Crainville | Heat Zone 7 61 - 90 days > 86°F |
| Creal Springs | Heat Zone 6 46 - 60 days > 86°F |
| Crescent City | Heat Zone 2 1 - 7 days > 86°F |
| Crest Hill | Heat Zone 1 < 1 days > 86°F |
| Cresthill | Heat Zone 2 1 - 7 days > 86°F |
| Creston | Heat Zone 1 < 1 days > 86°F |
| Crestwood | Heat Zone 1 < 1 days > 86°F |
| Crete | Heat Zone 1 < 1 days > 86°F |
| Creve Coeur | Heat Zone 3 8 - 14 days > 86°F |
| Cropsey | Heat Zone 2 1 - 7 days > 86°F |
| Crossville | Heat Zone 7 61 - 90 days > 86°F |
| Cruger | Heat Zone 4 15 - 30 days > 86°F |
| Crystal Lake | Heat Zone 1 < 1 days > 86°F |
| Crystal Lawns | Heat Zone 2 1 - 7 days > 86°F |
| Cuba | Heat Zone 5 31 - 45 days > 86°F |
| Cullom | Heat Zone 3 8 - 14 days > 86°F |
| Curran | Heat Zone 5 31 - 45 days > 86°F |
| Cutler | Heat Zone 7 61 - 90 days > 86°F |
| Cypress | Heat Zone 7 61 - 90 days > 86°F |
| Dahinda | Heat Zone 3 8 - 14 days > 86°F |
| Dahlgren | Heat Zone 7 61 - 90 days > 86°F |
| Dakota | Heat Zone 1 < 1 days > 86°F |
| Dale | Heat Zone 7 61 - 90 days > 86°F |
| Dallas City | Heat Zone 4 15 - 30 days > 86°F |
| Dalton City | Heat Zone 5 31 - 45 days > 86°F |
| Dalzell | Heat Zone 3 8 - 14 days > 86°F |
| Damiansville | Heat Zone 6 46 - 60 days > 86°F |
| Dana | Heat Zone 4 15 - 30 days > 86°F |
| Danforth | Heat Zone 2 1 - 7 days > 86°F |
| Danvers | Heat Zone 4 15 - 30 days > 86°F |
| Danville | Heat Zone 5 31 - 45 days > 86°F |
| Darien | Heat Zone 3 8 - 14 days > 86°F |
| Darmstadt | Heat Zone 7 61 - 90 days > 86°F |
| Davis | Heat Zone 1 < 1 days > 86°F |
| Davis Junction | Heat Zone 1 < 1 days > 86°F |
| Dawson | Heat Zone 4 15 - 30 days > 86°F |
| Dayton | Heat Zone 4 15 - 30 days > 86°F |
| De Land | Heat Zone 4 15 - 30 days > 86°F |
| De Soto | Heat Zone 7 61 - 90 days > 86°F |
| De Witt | Heat Zone 4 15 - 30 days > 86°F |
| Decatur | Heat Zone 6 46 - 60 days > 86°F |
| Deer Creek | Heat Zone 4 15 - 30 days > 86°F |
| Deer Grove | Heat Zone 4 15 - 30 days > 86°F |
| Deer Park | Heat Zone 1 < 1 days > 86°F |
| Deerfield | Heat Zone 1 < 1 days > 86°F |
| DeKalb | Heat Zone 1 < 1 days > 86°F |
| Delavan | Heat Zone 4 15 - 30 days > 86°F |
| Dennison | Heat Zone 5 31 - 45 days > 86°F |
| Depue | Heat Zone 4 15 - 30 days > 86°F |
| Des Plaines | Heat Zone 1 < 1 days > 86°F |
| Detroit | Heat Zone 6 46 - 60 days > 86°F |
| Dewey | Heat Zone 3 8 - 14 days > 86°F |
| Dewitt | Heat Zone 4 15 - 30 days > 86°F |
| Diamond | Heat Zone 2 1 - 7 days > 86°F |
| Dieterich | Heat Zone 6 46 - 60 days > 86°F |
| Dillon | Heat Zone 4 15 - 30 days > 86°F |
| Divernon | Heat Zone 5 31 - 45 days > 86°F |
| Dix | Heat Zone 7 61 - 90 days > 86°F |
| Dixmoor | Heat Zone 1 < 1 days > 86°F |
| Dixon | Heat Zone 2 1 - 7 days > 86°F |
| Dolton | Heat Zone 1 < 1 days > 86°F |
| Dongola | Heat Zone 7 61 - 90 days > 86°F |
| Donnellson | Heat Zone 7 61 - 90 days > 86°F |
| Donovan | Heat Zone 2 1 - 7 days > 86°F |
| Dorchester | Heat Zone 7 61 - 90 days > 86°F |
| Dorsey | Heat Zone 6 46 - 60 days > 86°F |
| Dover | Heat Zone 2 1 - 7 days > 86°F |
| Dow | Heat Zone 6 46 - 60 days > 86°F |
| Dowell | Heat Zone 7 61 - 90 days > 86°F |
| Downers Grove | Heat Zone 3 8 - 14 days > 86°F |
| Downs | Heat Zone 3 8 - 14 days > 86°F |
| Du Bois | Heat Zone 7 61 - 90 days > 86°F |
| Du Quoin | Heat Zone 7 61 - 90 days > 86°F |
| Dundas | Heat Zone 6 46 - 60 days > 86°F |
| Dundee | Heat Zone 1 < 1 days > 86°F |
| Dunfermline | Heat Zone 5 31 - 45 days > 86°F |
| Dunlap | Heat Zone 2 1 - 7 days > 86°F |
| Dupo | Heat Zone 7 61 - 90 days > 86°F |
| Durand | Heat Zone 1 < 1 days > 86°F |
| Dwight | Heat Zone 1 < 1 days > 86°F |
| Eagarville | Heat Zone 7 61 - 90 days > 86°F |
| Eagerville | Heat Zone 7 61 - 90 days > 86°F |
| Eagle Point | Heat Zone 1 < 1 days > 86°F |
| Earlville | Heat Zone 2 1 - 7 days > 86°F |
| East Alton | Heat Zone 6 46 - 60 days > 86°F |
| East Brooklyn | Heat Zone 2 1 - 7 days > 86°F |
| East Cape Girardeau | Heat Zone 7 61 - 90 days > 86°F |
| East Carondelet | Heat Zone 7 61 - 90 days > 86°F |
| East Dubuque | Heat Zone 1 < 1 days > 86°F |
| East Dundee | Heat Zone 1 < 1 days > 86°F |
| East Galesburg | Heat Zone 2 1 - 7 days > 86°F |
| East Gillespie | Heat Zone 7 61 - 90 days > 86°F |
| East Hazel Crest | Heat Zone 1 < 1 days > 86°F |
| East Lynn | Heat Zone 3 8 - 14 days > 86°F |
| East Moline | Heat Zone 1 < 1 days > 86°F |
| East Peoria | Heat Zone 3 8 - 14 days > 86°F |
| East Saint Louis | Heat Zone 7 61 - 90 days > 86°F |
| Easton | Heat Zone 4 15 - 30 days > 86°F |
| Eddyville | Heat Zone 7 61 - 90 days > 86°F |
| Edelstein | Heat Zone 2 1 - 7 days > 86°F |
| Edgewood | Heat Zone 7 61 - 90 days > 86°F |
| Edgington | Heat Zone 4 15 - 30 days > 86°F |
| Edinburg | Heat Zone 4 15 - 30 days > 86°F |
| Edwards | Heat Zone 3 8 - 14 days > 86°F |
| Edwardsville | Heat Zone 7 61 - 90 days > 86°F |
| Effingham | Heat Zone 6 46 - 60 days > 86°F |
| El Dara | Heat Zone 6 46 - 60 days > 86°F |
| El Paso | Heat Zone 4 15 - 30 days > 86°F |
| Elburn | Heat Zone 1 < 1 days > 86°F |
| Eldena | Heat Zone 2 1 - 7 days > 86°F |
| Eldorado | Heat Zone 7 61 - 90 days > 86°F |
| Eldred | Heat Zone 6 46 - 60 days > 86°F |
| Eleroy | Heat Zone 1 < 1 days > 86°F |
| Elgin | Heat Zone 1 < 1 days > 86°F |
| Eliza | Heat Zone 4 15 - 30 days > 86°F |
| Elizabeth | Heat Zone 1 < 1 days > 86°F |
| Elizabethtown | Heat Zone 7 61 - 90 days > 86°F |
| Elk Grove Village | Heat Zone 2 1 - 7 days > 86°F |
| Elkhart | Heat Zone 5 31 - 45 days > 86°F |
| Elkville | Heat Zone 7 61 - 90 days > 86°F |
| Ellery | Heat Zone 7 61 - 90 days > 86°F |
| Elliott | Heat Zone 2 1 - 7 days > 86°F |
| Ellis Grove | Heat Zone 7 61 - 90 days > 86°F |
| Ellisville | Heat Zone 4 15 - 30 days > 86°F |
| Ellsworth | Heat Zone 3 8 - 14 days > 86°F |
| Elmhurst | Heat Zone 2 1 - 7 days > 86°F |
| Elmira | Heat Zone 2 1 - 7 days > 86°F |
| Elmwood | Heat Zone 2 1 - 7 days > 86°F |
| Elmwood Park | Heat Zone 1 < 1 days > 86°F |
| Elsah | Heat Zone 6 46 - 60 days > 86°F |
| Elvaston | Heat Zone 5 31 - 45 days > 86°F |
| Elwin | Heat Zone 6 46 - 60 days > 86°F |
| Elwood | Heat Zone 2 1 - 7 days > 86°F |
| Emden | Heat Zone 5 31 - 45 days > 86°F |
| Emington | Heat Zone 2 1 - 7 days > 86°F |
| Emma | Heat Zone 7 61 - 90 days > 86°F |
| Empire | Heat Zone 4 15 - 30 days > 86°F |
| Energy | Heat Zone 6 46 - 60 days > 86°F |
| Enfield | Heat Zone 7 61 - 90 days > 86°F |
| Eola | Heat Zone 2 1 - 7 days > 86°F |
| Equality | Heat Zone 7 61 - 90 days > 86°F |
| Erie | Heat Zone 2 1 - 7 days > 86°F |
| Esmond | Heat Zone 1 < 1 days > 86°F |
| Essex | Heat Zone 2 1 - 7 days > 86°F |
| Eureka | Heat Zone 4 15 - 30 days > 86°F |
| Evanston | Heat Zone 1 < 1 days > 86°F |
| Evansville | Heat Zone 7 61 - 90 days > 86°F |
| Evergreen Park | Heat Zone 1 < 1 days > 86°F |
| Ewing | Heat Zone 7 61 - 90 days > 86°F |
| Exeter | Heat Zone 6 46 - 60 days > 86°F |
| Fairbury | Heat Zone 3 8 - 14 days > 86°F |
| Fairfield | Heat Zone 7 61 - 90 days > 86°F |
| Fairmont | Heat Zone 1 < 1 days > 86°F |
| Fairmont City | Heat Zone 7 61 - 90 days > 86°F |
| Fairmount | Heat Zone 4 15 - 30 days > 86°F |
| Fairview | Heat Zone 4 15 - 30 days > 86°F |
| Fairview Heights | Heat Zone 7 61 - 90 days > 86°F |
| Farina | Heat Zone 7 61 - 90 days > 86°F |
| Farmer City | Heat Zone 4 15 - 30 days > 86°F |
| Farmersville | Heat Zone 5 31 - 45 days > 86°F |
| Farmington | Heat Zone 4 15 - 30 days > 86°F |
| Fayetteville | Heat Zone 7 61 - 90 days > 86°F |
| Fenton | Heat Zone 3 8 - 14 days > 86°F |
| Ferris | Heat Zone 4 15 - 30 days > 86°F |
| Fiatt | Heat Zone 5 31 - 45 days > 86°F |
| Fidelity | Heat Zone 6 46 - 60 days > 86°F |
| Fieldon | Heat Zone 6 46 - 60 days > 86°F |
| Fillmore | Heat Zone 6 46 - 60 days > 86°F |
| Findlay | Heat Zone 6 46 - 60 days > 86°F |
| Fisher | Heat Zone 3 8 - 14 days > 86°F |
| Fithian | Heat Zone 4 15 - 30 days > 86°F |
| Flagg | Heat Zone 1 < 1 days > 86°F |
| Flanagan | Heat Zone 4 15 - 30 days > 86°F |
| Flat Rock | Heat Zone 7 61 - 90 days > 86°F |
| Flora | Heat Zone 7 61 - 90 days > 86°F |
| Floraville | Heat Zone 7 61 - 90 days > 86°F |
| Florence | Heat Zone 6 46 - 60 days > 86°F |
| Flossmoor | Heat Zone 1 < 1 days > 86°F |
| Foosland | Heat Zone 2 1 - 7 days > 86°F |
| Ford Heights | Heat Zone 1 < 1 days > 86°F |
| Forest City | Heat Zone 4 15 - 30 days > 86°F |
| Forest Lake | Heat Zone 1 < 1 days > 86°F |
| Forest Park | Heat Zone 1 < 1 days > 86°F |
| Forest View | Heat Zone 1 < 1 days > 86°F |
| Forrest | Heat Zone 3 8 - 14 days > 86°F |
| Forreston | Heat Zone 1 < 1 days > 86°F |
| Forsyth | Heat Zone 6 46 - 60 days > 86°F |
| Fort Sheridan | Heat Zone 1 < 1 days > 86°F |
| Fowler | Heat Zone 4 15 - 30 days > 86°F |
| Fox Lake | Heat Zone 1 < 1 days > 86°F |
| Fox Lake Hills | Heat Zone 1 < 1 days > 86°F |
| Fox River Grove | Heat Zone 1 < 1 days > 86°F |
| Fox River Valley Gardens | Heat Zone 1 < 1 days > 86°F |
| Fox Valley | Heat Zone 1 < 1 days > 86°F |
| Frankfort | Heat Zone 1 < 1 days > 86°F |
| Frankfort Heights | Heat Zone 6 46 - 60 days > 86°F |
| Frankfort Square | Heat Zone 1 < 1 days > 86°F |
| Franklin | Heat Zone 6 46 - 60 days > 86°F |
| Franklin Grove | Heat Zone 1 < 1 days > 86°F |
| Franklin Park | Heat Zone 1 < 1 days > 86°F |
| Frederick | Heat Zone 5 31 - 45 days > 86°F |
| Freeburg | Heat Zone 7 61 - 90 days > 86°F |
| Freeman Spur | Heat Zone 6 46 - 60 days > 86°F |
| Freeport | Heat Zone 1 < 1 days > 86°F |
| Fulton | Heat Zone 1 < 1 days > 86°F |
| Fults | Heat Zone 7 61 - 90 days > 86°F |
| Funks Grove | Heat Zone 4 15 - 30 days > 86°F |
| Gages Lake | Heat Zone 1 < 1 days > 86°F |
| Galatia | Heat Zone 7 61 - 90 days > 86°F |
| Galena | Heat Zone 1 < 1 days > 86°F |
| Galesburg | Heat Zone 1 < 1 days > 86°F |
| Galt | Heat Zone 3 8 - 14 days > 86°F |
| Galva | Heat Zone 4 15 - 30 days > 86°F |
| Garden Plain | Heat Zone 2 1 - 7 days > 86°F |
| Garden Prairie | Heat Zone 1 < 1 days > 86°F |
| Gardner | Heat Zone 2 1 - 7 days > 86°F |
| Garrett | Heat Zone 5 31 - 45 days > 86°F |
| Gays | Heat Zone 5 31 - 45 days > 86°F |
| Geff | Heat Zone 7 61 - 90 days > 86°F |
| Geneseo | Heat Zone 2 1 - 7 days > 86°F |
| Geneva | Heat Zone 2 1 - 7 days > 86°F |
| Genoa | Heat Zone 1 < 1 days > 86°F |
| Georgetown | Heat Zone 4 15 - 30 days > 86°F |
| Gerlaw | Heat Zone 4 15 - 30 days > 86°F |
| German Valley | Heat Zone 1 < 1 days > 86°F |
| Germantown | Heat Zone 6 46 - 60 days > 86°F |
| Germantown Hills | Heat Zone 3 8 - 14 days > 86°F |
| Gibson City | Heat Zone 2 1 - 7 days > 86°F |
| Gifford | Heat Zone 3 8 - 14 days > 86°F |
| Gilberts | Heat Zone 1 < 1 days > 86°F |
| Gillespie | Heat Zone 7 61 - 90 days > 86°F |
| Gilman | Heat Zone 2 1 - 7 days > 86°F |
| Gilson | Heat Zone 3 8 - 14 days > 86°F |
| Girard | Heat Zone 5 31 - 45 days > 86°F |
| Gladstone | Heat Zone 4 15 - 30 days > 86°F |
| Glasford | Heat Zone 4 15 - 30 days > 86°F |
| Glasgow | Heat Zone 6 46 - 60 days > 86°F |
| Glen Carbon | Heat Zone 7 61 - 90 days > 86°F |
| Glen Ellyn | Heat Zone 3 8 - 14 days > 86°F |
| Glenarm | Heat Zone 5 31 - 45 days > 86°F |
| Glenbard South | Heat Zone 3 8 - 14 days > 86°F |
| Glencoe | Heat Zone 1 < 1 days > 86°F |
| Glendale Heights | Heat Zone 3 8 - 14 days > 86°F |
| Glenview | Heat Zone 1 < 1 days > 86°F |
| Glenwood | Heat Zone 1 < 1 days > 86°F |
| Godfrey | Heat Zone 6 46 - 60 days > 86°F |
| Godley | Heat Zone 2 1 - 7 days > 86°F |
| Golconda | Heat Zone 7 61 - 90 days > 86°F |
| Golden | Heat Zone 4 15 - 30 days > 86°F |
| Golden Eagle | Heat Zone 7 61 - 90 days > 86°F |
| Golden Gate | Heat Zone 7 61 - 90 days > 86°F |
| Golf | Heat Zone 1 < 1 days > 86°F |
| Good Hope | Heat Zone 5 31 - 45 days > 86°F |
| Goodfield | Heat Zone 4 15 - 30 days > 86°F |
| Goodings Grove | Heat Zone 2 1 - 7 days > 86°F |
| Goodwine | Heat Zone 3 8 - 14 days > 86°F |
| Goofy Ridge | Heat Zone 5 31 - 45 days > 86°F |
| Goreville | Heat Zone 7 61 - 90 days > 86°F |
| Gorham | Heat Zone 7 61 - 90 days > 86°F |
| Grafton | Heat Zone 7 61 - 90 days > 86°F |
| Grand Chain | Heat Zone 7 61 - 90 days > 86°F |
| Grand Detour | Heat Zone 2 1 - 7 days > 86°F |
| Grand Ridge | Heat Zone 4 15 - 30 days > 86°F |
| Grand Tower | Heat Zone 7 61 - 90 days > 86°F |
| Grandview | Heat Zone 4 15 - 30 days > 86°F |
| Grandwood Park | Heat Zone 1 < 1 days > 86°F |
| Granite City | Heat Zone 7 61 - 90 days > 86°F |
| Grant Park | Heat Zone 2 1 - 7 days > 86°F |
| Grantfork | Heat Zone 6 46 - 60 days > 86°F |
| Grantsburg | Heat Zone 7 61 - 90 days > 86°F |
| Granville | Heat Zone 3 8 - 14 days > 86°F |
| Graymont | Heat Zone 3 8 - 14 days > 86°F |
| Grayslake | Heat Zone 1 < 1 days > 86°F |
| Grayville | Heat Zone 7 61 - 90 days > 86°F |
| Great Lakes | Heat Zone 1 < 1 days > 86°F |
| Green Oaks | Heat Zone 1 < 1 days > 86°F |
| Green Rock | Heat Zone 2 1 - 7 days > 86°F |
| Green Valley | Heat Zone 4 15 - 30 days > 86°F |
| Greenbush | Heat Zone 4 15 - 30 days > 86°F |
| Greenfield | Heat Zone 6 46 - 60 days > 86°F |
| Greenup | Heat Zone 5 31 - 45 days > 86°F |
| Greenview | Heat Zone 4 15 - 30 days > 86°F |
| Greenville | Heat Zone 6 46 - 60 days > 86°F |
| Greenwood | Heat Zone 1 < 1 days > 86°F |
| Gridley | Heat Zone 3 8 - 14 days > 86°F |
| Griggsville | Heat Zone 6 46 - 60 days > 86°F |
| Groveland | Heat Zone 3 8 - 14 days > 86°F |
| Gulf Port | Heat Zone 3 8 - 14 days > 86°F |
| Gurnee | Heat Zone 1 < 1 days > 86°F |
| Hagarstown | Heat Zone 5 31 - 45 days > 86°F |
| Hahnaman | Heat Zone 4 15 - 30 days > 86°F |
| Hainesville | Heat Zone 1 < 1 days > 86°F |
| Hamburg | Heat Zone 7 61 - 90 days > 86°F |
| Hamel | Heat Zone 7 61 - 90 days > 86°F |
| Hamilton | Heat Zone 5 31 - 45 days > 86°F |
| Hamletsburg | Heat Zone 7 61 - 90 days > 86°F |
| Hammond | Heat Zone 5 31 - 45 days > 86°F |
| Hampshire | Heat Zone 1 < 1 days > 86°F |
| Hampton | Heat Zone 1 < 1 days > 86°F |
| Hanna City | Heat Zone 3 8 - 14 days > 86°F |
| Hanover | Heat Zone 1 < 1 days > 86°F |
| Hanover Park | Heat Zone 2 1 - 7 days > 86°F |
| Hardin | Heat Zone 7 61 - 90 days > 86°F |
| Harlem | Heat Zone 1 < 1 days > 86°F |
| Harmon | Heat Zone 2 1 - 7 days > 86°F |
| Harrisburg | Heat Zone 8 91 - 120 days > 86°F |
| Harrison | Heat Zone 7 61 - 90 days > 86°F |
| Harristown | Heat Zone 6 46 - 60 days > 86°F |
| Hartford | Heat Zone 6 46 - 60 days > 86°F |
| Hartland | Heat Zone 1 < 1 days > 86°F |
| Hartsburg | Heat Zone 5 31 - 45 days > 86°F |
| Harvard | Heat Zone 1 < 1 days > 86°F |
| Harvel | Heat Zone 4 15 - 30 days > 86°F |
| Harvey | Heat Zone 1 < 1 days > 86°F |
| Harwood Heights | Heat Zone 1 < 1 days > 86°F |
| Havana | Heat Zone 6 46 - 60 days > 86°F |
| Hawthorn Woods | Heat Zone 1 < 1 days > 86°F |
| Hazel Crest | Heat Zone 1 < 1 days > 86°F |
| Hebron | Heat Zone 1 < 1 days > 86°F |
| Hecker | Heat Zone 7 61 - 90 days > 86°F |
| Henderson | Heat Zone 2 1 - 7 days > 86°F |
| Hennepin | Heat Zone 3 8 - 14 days > 86°F |
| Henning | Heat Zone 4 15 - 30 days > 86°F |
| Henry | Heat Zone 4 15 - 30 days > 86°F |
| Herald | Heat Zone 7 61 - 90 days > 86°F |
| Herod | Heat Zone 7 61 - 90 days > 86°F |
| Herrick | Heat Zone 5 31 - 45 days > 86°F |
| Herrin | Heat Zone 6 46 - 60 days > 86°F |
| Herscher | Heat Zone 2 1 - 7 days > 86°F |
| Hettick | Heat Zone 6 46 - 60 days > 86°F |
| Heyworth | Heat Zone 4 15 - 30 days > 86°F |
| Hickory Hills | Heat Zone 1 < 1 days > 86°F |
| Hidalgo | Heat Zone 5 31 - 45 days > 86°F |
| Highland | Heat Zone 6 46 - 60 days > 86°F |
| Highland Park | Heat Zone 1 < 1 days > 86°F |
| Highwood | Heat Zone 1 < 1 days > 86°F |
| Hillcrest | Heat Zone 1 < 1 days > 86°F |
| Hillsboro | Heat Zone 7 61 - 90 days > 86°F |
| Hillsdale | Heat Zone 2 1 - 7 days > 86°F |
| Hillside | Heat Zone 2 1 - 7 days > 86°F |
| Hillview | Heat Zone 6 46 - 60 days > 86°F |
| Hinckley | Heat Zone 1 < 1 days > 86°F |
| Hindsboro | Heat Zone 5 31 - 45 days > 86°F |
| Hines | Heat Zone 2 1 - 7 days > 86°F |
| Hinsdale | Heat Zone 2 1 - 7 days > 86°F |
| Hodgkins | Heat Zone 2 1 - 7 days > 86°F |
| Hoffman | Heat Zone 5 31 - 45 days > 86°F |
| Hoffman Estates | Heat Zone 1 < 1 days > 86°F |
| Holcomb | Heat Zone 1 < 1 days > 86°F |
| Holiday Hills | Heat Zone 1 < 1 days > 86°F |
| Holiday Shores | Heat Zone 7 61 - 90 days > 86°F |
| Holland | Heat Zone 6 46 - 60 days > 86°F |
| Hollis | Heat Zone 3 8 - 14 days > 86°F |
| Hollowayville | Heat Zone 3 8 - 14 days > 86°F |
| Homer | Heat Zone 4 15 - 30 days > 86°F |
| Homer Glen | Heat Zone 2 1 - 7 days > 86°F |
| Hometown | Heat Zone 1 < 1 days > 86°F |
| Homewood | Heat Zone 1 < 1 days > 86°F |
| Hoopeston | Heat Zone 4 15 - 30 days > 86°F |
| Hooppole | Heat Zone 2 1 - 7 days > 86°F |
| Hopedale | Heat Zone 4 15 - 30 days > 86°F |
| Hopewell | Heat Zone 4 15 - 30 days > 86°F |
| Hopkins Park | Heat Zone 2 1 - 7 days > 86°F |
| Hoyleton | Heat Zone 6 46 - 60 days > 86°F |
| Hudson | Heat Zone 4 15 - 30 days > 86°F |
| Huey | Heat Zone 5 31 - 45 days > 86°F |
| Hull | Heat Zone 5 31 - 45 days > 86°F |
| Humboldt | Heat Zone 4 15 - 30 days > 86°F |
| Hume | Heat Zone 6 46 - 60 days > 86°F |
| Huntley | Heat Zone 1 < 1 days > 86°F |
| Huntsville | Heat Zone 4 15 - 30 days > 86°F |
| Hurst | Heat Zone 7 61 - 90 days > 86°F |
| Hutsonville | Heat Zone 7 61 - 90 days > 86°F |
| Illinois City | Heat Zone 4 15 - 30 days > 86°F |
| Illiopolis | Heat Zone 5 31 - 45 days > 86°F |
| Ina | Heat Zone 7 61 - 90 days > 86°F |
| Indian Creek | Heat Zone 1 < 1 days > 86°F |
| Indian Head Park | Heat Zone 2 1 - 7 days > 86°F |
| Indianola | Heat Zone 5 31 - 45 days > 86°F |
| Industry | Heat Zone 5 31 - 45 days > 86°F |
| Ingalls Park | Heat Zone 1 < 1 days > 86°F |
| Ingleside | Heat Zone 1 < 1 days > 86°F |
| Ingraham | Heat Zone 7 61 - 90 days > 86°F |
| Inverness | Heat Zone 1 < 1 days > 86°F |
| Iola | Heat Zone 7 61 - 90 days > 86°F |
| Ipava | Heat Zone 5 31 - 45 days > 86°F |
| Iroquois | Heat Zone 2 1 - 7 days > 86°F |
| Irving | Heat Zone 6 46 - 60 days > 86°F |
| Irvington | Heat Zone 6 46 - 60 days > 86°F |
| Irwin | Heat Zone 2 1 - 7 days > 86°F |
| Island Grove | Heat Zone 5 31 - 45 days > 86°F |
| Island Lake | Heat Zone 1 < 1 days > 86°F |
| Itasca | Heat Zone 2 1 - 7 days > 86°F |
| Iuka | Heat Zone 7 61 - 90 days > 86°F |
| Ivesdale | Heat Zone 4 15 - 30 days > 86°F |
| Jacksonville | Heat Zone 6 46 - 60 days > 86°F |
| Jacob | Heat Zone 7 61 - 90 days > 86°F |
| Jamaica | Heat Zone 5 31 - 45 days > 86°F |
| Janesville | Heat Zone 5 31 - 45 days > 86°F |
| Jeisyville | Heat Zone 4 15 - 30 days > 86°F |
| Jerome | Heat Zone 4 15 - 30 days > 86°F |
| Jerseyville | Heat Zone 6 46 - 60 days > 86°F |
| Jewett | Heat Zone 5 31 - 45 days > 86°F |
| Johannisburg | Heat Zone 7 61 - 90 days > 86°F |
| Johnsburg | Heat Zone 1 < 1 days > 86°F |
| Johnsonville | Heat Zone 7 61 - 90 days > 86°F |
| Johnston City | Heat Zone 5 31 - 45 days > 86°F |
| Joliet | Heat Zone 1 < 1 days > 86°F |
| Jonesboro | Heat Zone 7 61 - 90 days > 86°F |
| Joppa | Heat Zone 7 61 - 90 days > 86°F |
| Joy | Heat Zone 4 15 - 30 days > 86°F |
| Junction | Heat Zone 7 61 - 90 days > 86°F |
| Junction City | Heat Zone 6 46 - 60 days > 86°F |
| Justice | Heat Zone 1 < 1 days > 86°F |
| Kampsville | Heat Zone 7 61 - 90 days > 86°F |
| Kane | Heat Zone 6 46 - 60 days > 86°F |
| Kaneville | Heat Zone 1 < 1 days > 86°F |
| Kangley | Heat Zone 4 15 - 30 days > 86°F |
| Kankakee | Heat Zone 2 1 - 7 days > 86°F |
| Kansas | Heat Zone 5 31 - 45 days > 86°F |
| Kappa | Heat Zone 4 15 - 30 days > 86°F |
| Karbers Ridge | Heat Zone 7 61 - 90 days > 86°F |
| Karnak | Heat Zone 7 61 - 90 days > 86°F |
| Kasbeer | Heat Zone 3 8 - 14 days > 86°F |
| Kaskaskia | Heat Zone 7 61 - 90 days > 86°F |
| Keenes | Heat Zone 7 61 - 90 days > 86°F |
| Keensburg | Heat Zone 7 61 - 90 days > 86°F |
| Keithsburg | Heat Zone 4 15 - 30 days > 86°F |
| Kell | Heat Zone 7 61 - 90 days > 86°F |
| Kempton | Heat Zone 2 1 - 7 days > 86°F |
| Kenilworth | Heat Zone 1 < 1 days > 86°F |
| Kenney | Heat Zone 5 31 - 45 days > 86°F |
| Kent | Heat Zone 1 < 1 days > 86°F |
| Kewanee | Heat Zone 1 < 1 days > 86°F |
| Keyesport | Heat Zone 5 31 - 45 days > 86°F |
| Kickapoo | Heat Zone 2 1 - 7 days > 86°F |
| Kilbourne | Heat Zone 5 31 - 45 days > 86°F |
| Kildeer | Heat Zone 1 < 1 days > 86°F |
| Kincaid | Heat Zone 4 15 - 30 days > 86°F |
| Kinderhook | Heat Zone 5 31 - 45 days > 86°F |
| Kingston | Heat Zone 1 < 1 days > 86°F |
| Kingston Mines | Heat Zone 4 15 - 30 days > 86°F |
| Kinmundy | Heat Zone 7 61 - 90 days > 86°F |
| Kinsman | Heat Zone 2 1 - 7 days > 86°F |
| Kirkland | Heat Zone 1 < 1 days > 86°F |
| Kirkwood | Heat Zone 4 15 - 30 days > 86°F |
| Knollwood | Heat Zone 1 < 1 days > 86°F |
| Knoxville | Heat Zone 2 1 - 7 days > 86°F |
| La Grange | Heat Zone 2 1 - 7 days > 86°F |
| La Grange Park | Heat Zone 2 1 - 7 days > 86°F |
| La Harpe | Heat Zone 5 31 - 45 days > 86°F |
| La Moille | Heat Zone 2 1 - 7 days > 86°F |
| La Place | Heat Zone 6 46 - 60 days > 86°F |
| La Prairie | Heat Zone 4 15 - 30 days > 86°F |
| La Rose | Heat Zone 4 15 - 30 days > 86°F |
| La Salle | Heat Zone 2 1 - 7 days > 86°F |
| La Salle/Peru | Heat Zone 3 8 - 14 days > 86°F |
| Lacon | Heat Zone 4 15 - 30 days > 86°F |
| Ladd | Heat Zone 3 8 - 14 days > 86°F |
| Lafayette | Heat Zone 3 8 - 14 days > 86°F |
| Lafox | Heat Zone 2 1 - 7 days > 86°F |
| Lake Barrington | Heat Zone 1 < 1 days > 86°F |
| Lake Bluff | Heat Zone 1 < 1 days > 86°F |
| Lake Catherine | Heat Zone 1 < 1 days > 86°F |
| Lake Forest | Heat Zone 1 < 1 days > 86°F |
| Lake Fork | Heat Zone 5 31 - 45 days > 86°F |
| Lake in the Hills | Heat Zone 1 < 1 days > 86°F |
| Lake Ka-Ho | Heat Zone 7 61 - 90 days > 86°F |
| Lake of the Woods | Heat Zone 3 8 - 14 days > 86°F |
| Lake Summerset | Heat Zone 1 < 1 days > 86°F |
| Lake Villa | Heat Zone 1 < 1 days > 86°F |
| Lake Zurich | Heat Zone 1 < 1 days > 86°F |
| Lakemoor | Heat Zone 1 < 1 days > 86°F |
| Lakewood | Heat Zone 5 31 - 45 days > 86°F |
| Lakewood Shores | Heat Zone 2 1 - 7 days > 86°F |
| Lanark | Heat Zone 1 < 1 days > 86°F |
| Lancaster | Heat Zone 7 61 - 90 days > 86°F |
| Lane | Heat Zone 4 15 - 30 days > 86°F |
| Lanesville | Heat Zone 5 31 - 45 days > 86°F |
| Langleyville | Heat Zone 4 15 - 30 days > 86°F |
| Lansing | Heat Zone 1 < 1 days > 86°F |
| Latham | Heat Zone 6 46 - 60 days > 86°F |
| Laura | Heat Zone 2 1 - 7 days > 86°F |
| Lawndale | Heat Zone 5 31 - 45 days > 86°F |
| Lawrenceville | Heat Zone 6 46 - 60 days > 86°F |
| Le Roy | Heat Zone 4 15 - 30 days > 86°F |
| Leaf River | Heat Zone 1 < 1 days > 86°F |
| Lebanon | Heat Zone 7 61 - 90 days > 86°F |
| Lee | Heat Zone 1 < 1 days > 86°F |
| Lee Center | Heat Zone 1 < 1 days > 86°F |
| Leland | Heat Zone 2 1 - 7 days > 86°F |
| Leland Grove | Heat Zone 4 15 - 30 days > 86°F |
| Lemont | Heat Zone 2 1 - 7 days > 86°F |
| Lena | Heat Zone 1 < 1 days > 86°F |
| Lenzburg | Heat Zone 7 61 - 90 days > 86°F |
| Leonore | Heat Zone 4 15 - 30 days > 86°F |
| Lerna | Heat Zone 4 15 - 30 days > 86°F |
| Lewistown | Heat Zone 5 31 - 45 days > 86°F |
| Lexington | Heat Zone 2 1 - 7 days > 86°F |
| Liberty | Heat Zone 4 15 - 30 days > 86°F |
| Libertyville | Heat Zone 1 < 1 days > 86°F |
| Lily Lake | Heat Zone 1 < 1 days > 86°F |
| Lima | Heat Zone 5 31 - 45 days > 86°F |
| Limestone | Heat Zone 2 1 - 7 days > 86°F |
| Lincoln | Heat Zone 5 31 - 45 days > 86°F |
| Lincoln's New Salem | Heat Zone 4 15 - 30 days > 86°F |
| Lincolnshire | Heat Zone 1 < 1 days > 86°F |
| Lincolnwood | Heat Zone 1 < 1 days > 86°F |
| Lindenhurst | Heat Zone 1 < 1 days > 86°F |
| Lindenwood | Heat Zone 1 < 1 days > 86°F |
| Lisbon | Heat Zone 2 1 - 7 days > 86°F |
| Lisle | Heat Zone 3 8 - 14 days > 86°F |
| Litchfield | Heat Zone 6 46 - 60 days > 86°F |
| Literberry | Heat Zone 6 46 - 60 days > 86°F |
| Little York | Heat Zone 4 15 - 30 days > 86°F |
| Littleton | Heat Zone 5 31 - 45 days > 86°F |
| Lively Grove | Heat Zone 7 61 - 90 days > 86°F |
| Liverpool | Heat Zone 6 46 - 60 days > 86°F |
| Livingston | Heat Zone 7 61 - 90 days > 86°F |
| Loami | Heat Zone 5 31 - 45 days > 86°F |
| Lockport | Heat Zone 2 1 - 7 days > 86°F |
| Loda | Heat Zone 2 1 - 7 days > 86°F |
| Logan | Heat Zone 7 61 - 90 days > 86°F |
| Lomax | Heat Zone 4 15 - 30 days > 86°F |
| Lombard | Heat Zone 3 8 - 14 days > 86°F |
| London Mills | Heat Zone 4 15 - 30 days > 86°F |
| Long Creek | Heat Zone 6 46 - 60 days > 86°F |
| Long Grove | Heat Zone 1 < 1 days > 86°F |
| Long Lake | Heat Zone 1 < 1 days > 86°F |
| Long Point | Heat Zone 4 15 - 30 days > 86°F |
| Longview | Heat Zone 5 31 - 45 days > 86°F |
| Loogootee | Heat Zone 6 46 - 60 days > 86°F |
| Loraine | Heat Zone 4 15 - 30 days > 86°F |
| Loran | Heat Zone 1 < 1 days > 86°F |
| Lost Nation | Heat Zone 1 < 1 days > 86°F |
| Lostant | Heat Zone 4 15 - 30 days > 86°F |
| Louisville | Heat Zone 7 61 - 90 days > 86°F |
| Lovejoy | Heat Zone 7 61 - 90 days > 86°F |
| Loves Park | Heat Zone 1 < 1 days > 86°F |
| Lovington | Heat Zone 5 31 - 45 days > 86°F |
| Lowder | Heat Zone 5 31 - 45 days > 86°F |
| Lowpoint | Heat Zone 4 15 - 30 days > 86°F |
| Ludlow | Heat Zone 3 8 - 14 days > 86°F |
| Lyndon | Heat Zone 3 8 - 14 days > 86°F |
| Lynn Center | Heat Zone 2 1 - 7 days > 86°F |
| Lynnville | Heat Zone 6 46 - 60 days > 86°F |
| Lynwood | Heat Zone 1 < 1 days > 86°F |
| Lyons | Heat Zone 1 < 1 days > 86°F |
| Macedonia | Heat Zone 7 61 - 90 days > 86°F |
| Machesney Park | Heat Zone 1 < 1 days > 86°F |
| Mackinaw | Heat Zone 4 15 - 30 days > 86°F |
| Macomb | Heat Zone 5 31 - 45 days > 86°F |
| Macon | Heat Zone 5 31 - 45 days > 86°F |
| Madison | Heat Zone 7 61 - 90 days > 86°F |
| Maeystown | Heat Zone 7 61 - 90 days > 86°F |
| Magnolia | Heat Zone 4 15 - 30 days > 86°F |
| Mahomet | Heat Zone 3 8 - 14 days > 86°F |
| Makanda | Heat Zone 7 61 - 90 days > 86°F |
| Malden | Heat Zone 3 8 - 14 days > 86°F |
| Malta | Heat Zone 1 < 1 days > 86°F |
| Manchester | Heat Zone 6 46 - 60 days > 86°F |
| Manhattan | Heat Zone 1 < 1 days > 86°F |
| Manito | Heat Zone 4 15 - 30 days > 86°F |
| Manlius | Heat Zone 4 15 - 30 days > 86°F |
| Mansfield | Heat Zone 3 8 - 14 days > 86°F |
| Manteno | Heat Zone 2 1 - 7 days > 86°F |
| Maple Park | Heat Zone 1 < 1 days > 86°F |
| Mapleton | Heat Zone 3 8 - 14 days > 86°F |
| Maquon | Heat Zone 2 1 - 7 days > 86°F |
| Marengo | Heat Zone 1 < 1 days > 86°F |
| Marietta | Heat Zone 5 31 - 45 days > 86°F |
| Marine | Heat Zone 7 61 - 90 days > 86°F |
| Marion | Heat Zone 5 31 - 45 days > 86°F |
| Marissa | Heat Zone 7 61 - 90 days > 86°F |
| Mark | Heat Zone 3 8 - 14 days > 86°F |
| Markham | Heat Zone 1 < 1 days > 86°F |
| Maroa | Heat Zone 5 31 - 45 days > 86°F |
| Marquette Heights | Heat Zone 3 8 - 14 days > 86°F |
| Marseilles | Heat Zone 4 15 - 30 days > 86°F |
| Marshall | Heat Zone 6 46 - 60 days > 86°F |
| Martinsburg | Heat Zone 6 46 - 60 days > 86°F |
| Martinsville | Heat Zone 6 46 - 60 days > 86°F |
| Martinton | Heat Zone 2 1 - 7 days > 86°F |
| Maryland | Heat Zone 1 < 1 days > 86°F |
| Maryville | Heat Zone 7 61 - 90 days > 86°F |
| Mascoutah | Heat Zone 7 61 - 90 days > 86°F |
| Mason | Heat Zone 7 61 - 90 days > 86°F |
| Mason City | Heat Zone 4 15 - 30 days > 86°F |
| Matherville | Heat Zone 3 8 - 14 days > 86°F |
| Matteson | Heat Zone 1 < 1 days > 86°F |
| Mattoon | Heat Zone 4 15 - 30 days > 86°F |
| Maunie | Heat Zone 7 61 - 90 days > 86°F |
| Maywood | Heat Zone 2 1 - 7 days > 86°F |
| Mazon | Heat Zone 2 1 - 7 days > 86°F |
| McClure | Heat Zone 7 61 - 90 days > 86°F |
| McConnell | Heat Zone 1 < 1 days > 86°F |
| McCook | Heat Zone 2 1 - 7 days > 86°F |
| McCullom Lake | Heat Zone 1 < 1 days > 86°F |
| McHenry | Heat Zone 1 < 1 days > 86°F |
| McLean | Heat Zone 5 31 - 45 days > 86°F |
| McLeansboro | Heat Zone 7 61 - 90 days > 86°F |
| McNabb | Heat Zone 3 8 - 14 days > 86°F |
| Mechanicsburg | Heat Zone 5 31 - 45 days > 86°F |
| Media | Heat Zone 4 15 - 30 days > 86°F |
| Medinah | Heat Zone 2 1 - 7 days > 86°F |
| Medora | Heat Zone 6 46 - 60 days > 86°F |
| Melrose Park | Heat Zone 2 1 - 7 days > 86°F |
| Melvin | Heat Zone 2 1 - 7 days > 86°F |
| Menard | Heat Zone 7 61 - 90 days > 86°F |
| Mendon | Heat Zone 4 15 - 30 days > 86°F |
| Mendota | Heat Zone 3 8 - 14 days > 86°F |
| Menominee | Heat Zone 1 < 1 days > 86°F |
| Meredosia | Heat Zone 6 46 - 60 days > 86°F |
| Merna | Heat Zone 3 8 - 14 days > 86°F |
| Merrionette Park | Heat Zone 1 < 1 days > 86°F |
| Metamora | Heat Zone 4 15 - 30 days > 86°F |
| Metcalf | Heat Zone 5 31 - 45 days > 86°F |
| Metropolis | Heat Zone 7 61 - 90 days > 86°F |
| Mettawa | Heat Zone 1 < 1 days > 86°F |
| Michael | Heat Zone 7 61 - 90 days > 86°F |
| Middletown | Heat Zone 4 15 - 30 days > 86°F |
| Midlothian | Heat Zone 1 < 1 days > 86°F |
| Milan | Heat Zone 2 1 - 7 days > 86°F |
| Milford | Heat Zone 3 8 - 14 days > 86°F |
| Mill Creek | Heat Zone 7 61 - 90 days > 86°F |
| Mill Shoals | Heat Zone 7 61 - 90 days > 86°F |
| Millbrook | Heat Zone 2 1 - 7 days > 86°F |
| Milledgeville | Heat Zone 2 1 - 7 days > 86°F |
| Miller City | Heat Zone 7 61 - 90 days > 86°F |
| Millersburg | Heat Zone 4 15 - 30 days > 86°F |
| Millington | Heat Zone 2 1 - 7 days > 86°F |
| Millstadt | Heat Zone 7 61 - 90 days > 86°F |
| Milmine | Heat Zone 5 31 - 45 days > 86°F |
| Milton | Heat Zone 6 46 - 60 days > 86°F |
| Mineral | Heat Zone 2 1 - 7 days > 86°F |
| Minier | Heat Zone 4 15 - 30 days > 86°F |
| Minonk | Heat Zone 5 31 - 45 days > 86°F |
| Minooka | Heat Zone 2 1 - 7 days > 86°F |
| Mitchell | Heat Zone 7 61 - 90 days > 86°F |
| Mode | Heat Zone 6 46 - 60 days > 86°F |
| Modesto | Heat Zone 6 46 - 60 days > 86°F |
| Modoc | Heat Zone 7 61 - 90 days > 86°F |
| Mokena | Heat Zone 1 < 1 days > 86°F |
| Moline | Heat Zone 2 1 - 7 days > 86°F |
| Momence | Heat Zone 2 1 - 7 days > 86°F |
| Monee | Heat Zone 1 < 1 days > 86°F |
| Monmouth | Heat Zone 4 15 - 30 days > 86°F |
| Monroe Center | Heat Zone 1 < 1 days > 86°F |
| Montezuma | Heat Zone 6 46 - 60 days > 86°F |
| Montgomery | Heat Zone 1 < 1 days > 86°F |
| Monticello | Heat Zone 4 15 - 30 days > 86°F |
| Montrose | Heat Zone 6 46 - 60 days > 86°F |
| Mooseheart | Heat Zone 1 < 1 days > 86°F |
| Moro | Heat Zone 6 46 - 60 days > 86°F |
| Morris | Heat Zone 3 8 - 14 days > 86°F |
| Morrison | Heat Zone 3 8 - 14 days > 86°F |
| Morrisonville | Heat Zone 4 15 - 30 days > 86°F |
| Morton | Heat Zone 3 8 - 14 days > 86°F |
| Morton Grove | Heat Zone 1 < 1 days > 86°F |
| Mossville | Heat Zone 3 8 - 14 days > 86°F |
| Mound City | Heat Zone 7 61 - 90 days > 86°F |
| Mounds | Heat Zone 7 61 - 90 days > 86°F |
| Mount Auburn | Heat Zone 5 31 - 45 days > 86°F |
| Mount Carmel | Heat Zone 7 61 - 90 days > 86°F |
| Mount Carroll | Heat Zone 1 < 1 days > 86°F |
| Mount Clare | Heat Zone 7 61 - 90 days > 86°F |
| Mount Erie | Heat Zone 7 61 - 90 days > 86°F |
| Mount Morris | Heat Zone 1 < 1 days > 86°F |
| Mount Olive | Heat Zone 6 46 - 60 days > 86°F |
| Mount Prospect | Heat Zone 1 < 1 days > 86°F |
| Mount Pulaski | Heat Zone 5 31 - 45 days > 86°F |
| Mount Sterling | Heat Zone 5 31 - 45 days > 86°F |
| Mount Vernon | Heat Zone 7 61 - 90 days > 86°F |
| Mount Zion | Heat Zone 6 46 - 60 days > 86°F |
| Moweaqua | Heat Zone 5 31 - 45 days > 86°F |
| Mozier | Heat Zone 7 61 - 90 days > 86°F |
| Muddy | Heat Zone 8 91 - 120 days > 86°F |
| Mulberry Grove | Heat Zone 6 46 - 60 days > 86°F |
| Mulkeytown | Heat Zone 7 61 - 90 days > 86°F |
| Muncie | Heat Zone 5 31 - 45 days > 86°F |
| Mundelein | Heat Zone 1 < 1 days > 86°F |
| Murdock | Heat Zone 5 31 - 45 days > 86°F |
| Murphysboro | Heat Zone 7 61 - 90 days > 86°F |
| Murrayville | Heat Zone 6 46 - 60 days > 86°F |
| Nachusa | Heat Zone 2 1 - 7 days > 86°F |
| Nameoki | Heat Zone 7 61 - 90 days > 86°F |
| Naperville | Heat Zone 3 8 - 14 days > 86°F |
| Naplate | Heat Zone 5 31 - 45 days > 86°F |
| Naples | Heat Zone 6 46 - 60 days > 86°F |
| Nashville | Heat Zone 6 46 - 60 days > 86°F |
| Nason | Heat Zone 7 61 - 90 days > 86°F |
| National City | Heat Zone 7 61 - 90 days > 86°F |
| National Stock Yards | Heat Zone 7 61 - 90 days > 86°F |
| Nauvoo | Heat Zone 4 15 - 30 days > 86°F |
| Nebo | Heat Zone 6 46 - 60 days > 86°F |
| Nelson | Heat Zone 2 1 - 7 days > 86°F |
| Neoga | Heat Zone 5 31 - 45 days > 86°F |
| Neponset | Heat Zone 2 1 - 7 days > 86°F |
| Nevada | Heat Zone 2 1 - 7 days > 86°F |
| New Athens | Heat Zone 7 61 - 90 days > 86°F |
| New Baden | Heat Zone 7 61 - 90 days > 86°F |
| New Bedford | Heat Zone 4 15 - 30 days > 86°F |
| New Berlin | Heat Zone 5 31 - 45 days > 86°F |
| New Boston | Heat Zone 4 15 - 30 days > 86°F |
| New Burnside | Heat Zone 7 61 - 90 days > 86°F |
| New Canton | Heat Zone 6 46 - 60 days > 86°F |
| New Douglas | Heat Zone 7 61 - 90 days > 86°F |
| New Grand Chain | Heat Zone 7 61 - 90 days > 86°F |
| New Haven | Heat Zone 7 61 - 90 days > 86°F |
| New Holland | Heat Zone 4 15 - 30 days > 86°F |
| New Lenox | Heat Zone 1 < 1 days > 86°F |
| New Memphis | Heat Zone 7 61 - 90 days > 86°F |
| New Milford | Heat Zone 1 < 1 days > 86°F |
| New Minden | Heat Zone 6 46 - 60 days > 86°F |
| New Salem | Heat Zone 6 46 - 60 days > 86°F |
| New Windsor | Heat Zone 2 1 - 7 days > 86°F |
| Newark | Heat Zone 3 8 - 14 days > 86°F |
| Newell | Heat Zone 5 31 - 45 days > 86°F |
| Newman | Heat Zone 6 46 - 60 days > 86°F |
| Newton | Heat Zone 6 46 - 60 days > 86°F |
| Niantic | Heat Zone 6 46 - 60 days > 86°F |
| Niles | Heat Zone 1 < 1 days > 86°F |
| Nilwood | Heat Zone 6 46 - 60 days > 86°F |
| Niota | Heat Zone 4 15 - 30 days > 86°F |
| Noble | Heat Zone 7 61 - 90 days > 86°F |
| Nokomis | Heat Zone 5 31 - 45 days > 86°F |
| Nora | Heat Zone 1 < 1 days > 86°F |
| Normal | Heat Zone 4 15 - 30 days > 86°F |
| Norridge | Heat Zone 1 < 1 days > 86°F |
| Norris | Heat Zone 4 15 - 30 days > 86°F |
| Norris City | Heat Zone 7 61 - 90 days > 86°F |
| North Aurora | Heat Zone 1 < 1 days > 86°F |
| North Barrington | Heat Zone 1 < 1 days > 86°F |
| North Chicago | Heat Zone 1 < 1 days > 86°F |
| North Henderson | Heat Zone 3 8 - 14 days > 86°F |
| North Pekin | Heat Zone 3 8 - 14 days > 86°F |
| North Peoria | Heat Zone 3 8 - 14 days > 86°F |
| North Riverside | Heat Zone 1 < 1 days > 86°F |
| Northbrook | Heat Zone 1 < 1 days > 86°F |
| Northfield | Heat Zone 1 < 1 days > 86°F |
| Northlake | Heat Zone 2 1 - 7 days > 86°F |
| Norwood | Heat Zone 3 8 - 14 days > 86°F |
| O'Fallon | Heat Zone 7 61 - 90 days > 86°F |
| Oak Brook | Heat Zone 2 1 - 7 days > 86°F |
| Oak Forest | Heat Zone 1 < 1 days > 86°F |
| Oak Grove | Heat Zone 2 1 - 7 days > 86°F |
| Oak Lawn | Heat Zone 1 < 1 days > 86°F |
| Oak Park | Heat Zone 1 < 1 days > 86°F |
| Oak Run | Heat Zone 3 8 - 14 days > 86°F |
| Oakbrook Terrace | Heat Zone 3 8 - 14 days > 86°F |
| Oakdale | Heat Zone 7 61 - 90 days > 86°F |
| Oakford | Heat Zone 5 31 - 45 days > 86°F |
| Oakland | Heat Zone 6 46 - 60 days > 86°F |
| Oakley | Heat Zone 5 31 - 45 days > 86°F |
| Oakwood | Heat Zone 5 31 - 45 days > 86°F |
| Oakwood Hills | Heat Zone 1 < 1 days > 86°F |
| Oblong | Heat Zone 7 61 - 90 days > 86°F |
| Oconee | Heat Zone 5 31 - 45 days > 86°F |
| Odell | Heat Zone 2 1 - 7 days > 86°F |
| Odin | Heat Zone 7 61 - 90 days > 86°F |
| Ogden | Heat Zone 4 15 - 30 days > 86°F |
| Oglesby | Heat Zone 3 8 - 14 days > 86°F |
| Ohio | Heat Zone 3 8 - 14 days > 86°F |
| Ohlman | Heat Zone 5 31 - 45 days > 86°F |
| Okawville | Heat Zone 6 46 - 60 days > 86°F |
| Old Mill Creek | Heat Zone 1 < 1 days > 86°F |
| Old Ripley | Heat Zone 6 46 - 60 days > 86°F |
| Old Shawneetown | Heat Zone 7 61 - 90 days > 86°F |
| Olive Branch | Heat Zone 7 61 - 90 days > 86°F |
| Olivet | Heat Zone 4 15 - 30 days > 86°F |
| Olmsted | Heat Zone 7 61 - 90 days > 86°F |
| Olney | Heat Zone 7 61 - 90 days > 86°F |
| Olympia Fields | Heat Zone 1 < 1 days > 86°F |
| Omaha | Heat Zone 7 61 - 90 days > 86°F |
| Omega | Heat Zone 7 61 - 90 days > 86°F |
| Onarga | Heat Zone 2 1 - 7 days > 86°F |
| Oneco | Heat Zone 1 < 1 days > 86°F |
| Oneida | Heat Zone 3 8 - 14 days > 86°F |
| Opdyke | Heat Zone 7 61 - 90 days > 86°F |
| Ophiem | Heat Zone 2 1 - 7 days > 86°F |
| Oquawka | Heat Zone 4 15 - 30 days > 86°F |
| Orangeville | Heat Zone 1 < 1 days > 86°F |
| Oraville | Heat Zone 7 61 - 90 days > 86°F |
| Oreana | Heat Zone 5 31 - 45 days > 86°F |
| Oregon | Heat Zone 1 < 1 days > 86°F |
| Orient | Heat Zone 6 46 - 60 days > 86°F |
| Orion | Heat Zone 2 1 - 7 days > 86°F |
| Orland Hills | Heat Zone 1 < 1 days > 86°F |
| Orland Park | Heat Zone 1 < 1 days > 86°F |
| Osceola | Heat Zone 2 1 - 7 days > 86°F |
| Osco | Heat Zone 2 1 - 7 days > 86°F |
| Oswego | Heat Zone 1 < 1 days > 86°F |
| Ottawa | Heat Zone 4 15 - 30 days > 86°F |
| Otterville | Heat Zone 6 46 - 60 days > 86°F |
| Owaneco | Heat Zone 5 31 - 45 days > 86°F |
| Ozark | Heat Zone 7 61 - 90 days > 86°F |
| Paderborn | Heat Zone 7 61 - 90 days > 86°F |
| Palatine | Heat Zone 1 < 1 days > 86°F |
| Palestine | Heat Zone 7 61 - 90 days > 86°F |
| Palmer | Heat Zone 4 15 - 30 days > 86°F |
| Palmyra | Heat Zone 6 46 - 60 days > 86°F |
| Paloma | Heat Zone 4 15 - 30 days > 86°F |
| Palos Heights | Heat Zone 1 < 1 days > 86°F |
| Palos Hills | Heat Zone 1 < 1 days > 86°F |
| Palos Park | Heat Zone 1 < 1 days > 86°F |
| Pana | Heat Zone 5 31 - 45 days > 86°F |
| Panama | Heat Zone 7 61 - 90 days > 86°F |
| Panola | Heat Zone 4 15 - 30 days > 86°F |
| Papineau | Heat Zone 2 1 - 7 days > 86°F |
| Paris | Heat Zone 6 46 - 60 days > 86°F |
| Park City | Heat Zone 1 < 1 days > 86°F |
| Park Forest | Heat Zone 1 < 1 days > 86°F |
| Park Ridge | Heat Zone 1 < 1 days > 86°F |
| Parkersburg | Heat Zone 7 61 - 90 days > 86°F |
| Patoka | Heat Zone 6 46 - 60 days > 86°F |
| Patterson | Heat Zone 6 46 - 60 days > 86°F |
| Paw Paw | Heat Zone 1 < 1 days > 86°F |
| Pawnee | Heat Zone 4 15 - 30 days > 86°F |
| Paxton | Heat Zone 2 1 - 7 days > 86°F |
| Payson | Heat Zone 4 15 - 30 days > 86°F |
| Pearl | Heat Zone 6 46 - 60 days > 86°F |
| Pearl City | Heat Zone 1 < 1 days > 86°F |
| Pecatonica | Heat Zone 1 < 1 days > 86°F |
| Pekin | Heat Zone 3 8 - 14 days > 86°F |
| Pembroke Township | Heat Zone 2 1 - 7 days > 86°F |
| Penfield | Heat Zone 3 8 - 14 days > 86°F |
| Peoria | Heat Zone 3 8 - 14 days > 86°F |
| Peoria Heights | Heat Zone 3 8 - 14 days > 86°F |
| Peotone | Heat Zone 2 1 - 7 days > 86°F |
| Percy | Heat Zone 7 61 - 90 days > 86°F |
| Perks | Heat Zone 7 61 - 90 days > 86°F |
| Perry | Heat Zone 6 46 - 60 days > 86°F |
| Peru | Heat Zone 2 1 - 7 days > 86°F |
| Pesotum | Heat Zone 5 31 - 45 days > 86°F |
| Petersburg | Heat Zone 4 15 - 30 days > 86°F |
| Phillipstown | Heat Zone 7 61 - 90 days > 86°F |
| Philo | Heat Zone 3 8 - 14 days > 86°F |
| Phoenix | Heat Zone 1 < 1 days > 86°F |
| Piasa | Heat Zone 6 46 - 60 days > 86°F |
| Pierron | Heat Zone 6 46 - 60 days > 86°F |
| Pinckneyville | Heat Zone 7 61 - 90 days > 86°F |
| Pingree Grove | Heat Zone 1 < 1 days > 86°F |
| Piper City | Heat Zone 3 8 - 14 days > 86°F |
| Pistakee Highlands | Heat Zone 1 < 1 days > 86°F |
| Pittsburg | Heat Zone 5 31 - 45 days > 86°F |
| Pittsfield | Heat Zone 6 46 - 60 days > 86°F |
| Plainfield | Heat Zone 2 1 - 7 days > 86°F |
| Plainville | Heat Zone 4 15 - 30 days > 86°F |
| Plano | Heat Zone 2 1 - 7 days > 86°F |
| Plato Center | Heat Zone 1 < 1 days > 86°F |
| Plattville | Heat Zone 2 1 - 7 days > 86°F |
| Pleasant Hill | Heat Zone 6 46 - 60 days > 86°F |
| Pleasant Plains | Heat Zone 5 31 - 45 days > 86°F |
| Plum Hill | Heat Zone 6 46 - 60 days > 86°F |
| Plymouth | Heat Zone 5 31 - 45 days > 86°F |
| Pocahontas | Heat Zone 6 46 - 60 days > 86°F |
| Polo | Heat Zone 1 < 1 days > 86°F |
| Pomona | Heat Zone 7 61 - 90 days > 86°F |
| Pontiac | Heat Zone 4 15 - 30 days > 86°F |
| Pontoon Beach | Heat Zone 7 61 - 90 days > 86°F |
| Pontoosuc | Heat Zone 4 15 - 30 days > 86°F |
| Poplar Grove | Heat Zone 1 < 1 days > 86°F |
| Port Barrington | Heat Zone 1 < 1 days > 86°F |
| Port Byron | Heat Zone 2 1 - 7 days > 86°F |
| Portland | Heat Zone 3 8 - 14 days > 86°F |
| Posen | Heat Zone 1 < 1 days > 86°F |
| Potomac | Heat Zone 4 15 - 30 days > 86°F |
| Prairie City | Heat Zone 4 15 - 30 days > 86°F |
| Prairie du Rocher | Heat Zone 7 61 - 90 days > 86°F |
| Prairie Grove | Heat Zone 1 < 1 days > 86°F |
| Preemption | Heat Zone 3 8 - 14 days > 86°F |
| Preston Heights | Heat Zone 1 < 1 days > 86°F |
| Princeton | Heat Zone 1 < 1 days > 86°F |
| Princeville | Heat Zone 2 1 - 7 days > 86°F |
| Prophetstown | Heat Zone 3 8 - 14 days > 86°F |
| Prospect Heights | Heat Zone 1 < 1 days > 86°F |
| Pulaski | Heat Zone 7 61 - 90 days > 86°F |
| Putnam | Heat Zone 4 15 - 30 days > 86°F |
| Quad City International Airport | Heat Zone 2 1 - 7 days > 86°F |
| Quincy | Heat Zone 5 31 - 45 days > 86°F |
| Radom | Heat Zone 7 61 - 90 days > 86°F |
| Raleigh | Heat Zone 7 61 - 90 days > 86°F |
| Ramsey | Heat Zone 6 46 - 60 days > 86°F |
| Randolph | Heat Zone 3 8 - 14 days > 86°F |
| Rankin | Heat Zone 3 8 - 14 days > 86°F |
| Ransom | Heat Zone 3 8 - 14 days > 86°F |
| Rantoul | Heat Zone 4 15 - 30 days > 86°F |
| Rapids City | Heat Zone 1 < 1 days > 86°F |
| Raritan | Heat Zone 4 15 - 30 days > 86°F |
| Raymond | Heat Zone 5 31 - 45 days > 86°F |
| Reading | Heat Zone 4 15 - 30 days > 86°F |
| Red Bud | Heat Zone 7 61 - 90 days > 86°F |
| Reddick | Heat Zone 2 1 - 7 days > 86°F |
| Redmon | Heat Zone 6 46 - 60 days > 86°F |
| Renault | Heat Zone 7 61 - 90 days > 86°F |
| Rentchler | Heat Zone 7 61 - 90 days > 86°F |
| Reynolds | Heat Zone 3 8 - 14 days > 86°F |
| Richmond | Heat Zone 1 < 1 days > 86°F |
| Richton Park | Heat Zone 1 < 1 days > 86°F |
| Richview | Heat Zone 6 46 - 60 days > 86°F |
| Ridge Farm | Heat Zone 4 15 - 30 days > 86°F |
| Ridgway | Heat Zone 7 61 - 90 days > 86°F |
| Ridott | Heat Zone 1 < 1 days > 86°F |
| Riley | Heat Zone 1 < 1 days > 86°F |
| Rinard | Heat Zone 7 61 - 90 days > 86°F |
| Ringwood | Heat Zone 1 < 1 days > 86°F |
| Rio | Heat Zone 3 8 - 14 days > 86°F |
| Ripley | Heat Zone 5 31 - 45 days > 86°F |
| River Forest | Heat Zone 1 < 1 days > 86°F |
| River Grove | Heat Zone 1 < 1 days > 86°F |
| Riverdale | Heat Zone 1 < 1 days > 86°F |
| Riverside | Heat Zone 1 < 1 days > 86°F |
| Riverton | Heat Zone 4 15 - 30 days > 86°F |
| Riverwoods | Heat Zone 1 < 1 days > 86°F |
| Roanoke | Heat Zone 4 15 - 30 days > 86°F |
| Robbins | Heat Zone 1 < 1 days > 86°F |
| Roberts | Heat Zone 2 1 - 7 days > 86°F |
| Robinson | Heat Zone 7 61 - 90 days > 86°F |
| Rochelle | Heat Zone 1 < 1 days > 86°F |
| Rochester | Heat Zone 4 15 - 30 days > 86°F |
| Rock City | Heat Zone 1 < 1 days > 86°F |
| Rock Falls | Heat Zone 3 8 - 14 days > 86°F |
| Rock Grove | Heat Zone 1 < 1 days > 86°F |
| Rock Island | Heat Zone 1 < 1 days > 86°F |
| Rock Island Arsenal | Heat Zone 1 < 1 days > 86°F |
| Rockbridge | Heat Zone 6 46 - 60 days > 86°F |
| Rockdale | Heat Zone 1 < 1 days > 86°F |
| Rockford | Heat Zone 1 < 1 days > 86°F |
| Rockport | Heat Zone 6 46 - 60 days > 86°F |
| Rockton | Heat Zone 1 < 1 days > 86°F |
| Rockwood | Heat Zone 7 61 - 90 days > 86°F |
| Rolling Meadows | Heat Zone 1 < 1 days > 86°F |
| Rome | Heat Zone 3 8 - 14 days > 86°F |
| Romeoville | Heat Zone 2 1 - 7 days > 86°F |
| Roodhouse | Heat Zone 6 46 - 60 days > 86°F |
| Rooks Creek | Heat Zone 3 8 - 14 days > 86°F |
| Rosamond | Heat Zone 5 31 - 45 days > 86°F |
| Roscoe | Heat Zone 1 < 1 days > 86°F |
| Rose Hill | Heat Zone 6 46 - 60 days > 86°F |
| Roselle | Heat Zone 2 1 - 7 days > 86°F |
| Rosemont | Heat Zone 1 < 1 days > 86°F |
| Roseville | Heat Zone 4 15 - 30 days > 86°F |
| Rosewood Heights | Heat Zone 6 46 - 60 days > 86°F |
| Rosiclare | Heat Zone 6 46 - 60 days > 86°F |
| Rossville | Heat Zone 4 15 - 30 days > 86°F |
| Round Lake | Heat Zone 1 < 1 days > 86°F |
| Round Lake Beach | Heat Zone 1 < 1 days > 86°F |
| Round Lake Heights | Heat Zone 1 < 1 days > 86°F |
| Round Lake Park | Heat Zone 1 < 1 days > 86°F |
| Roxana | Heat Zone 6 46 - 60 days > 86°F |
| Royal | Heat Zone 3 8 - 14 days > 86°F |
| Royal Lakes | Heat Zone 7 61 - 90 days > 86°F |
| Royalton | Heat Zone 7 61 - 90 days > 86°F |
| Ruma | Heat Zone 7 61 - 90 days > 86°F |
| Rushville | Heat Zone 5 31 - 45 days > 86°F |
| Russell | Heat Zone 1 < 1 days > 86°F |
| Russellville | Heat Zone 6 46 - 60 days > 86°F |
| Rutland | Heat Zone 4 15 - 30 days > 86°F |
| Sadorus | Heat Zone 4 15 - 30 days > 86°F |
| Sailor Springs | Heat Zone 7 61 - 90 days > 86°F |
| Saint Anne | Heat Zone 2 1 - 7 days > 86°F |
| Saint Augustine | Heat Zone 4 15 - 30 days > 86°F |
| Saint Charles | Heat Zone 1 < 1 days > 86°F |
| Saint David | Heat Zone 5 31 - 45 days > 86°F |
| Saint Elmo | Heat Zone 6 46 - 60 days > 86°F |
| Saint Francisville | Heat Zone 7 61 - 90 days > 86°F |
| Saint Jacob | Heat Zone 7 61 - 90 days > 86°F |
| Saint Johns | Heat Zone 7 61 - 90 days > 86°F |
| Saint Joseph | Heat Zone 3 8 - 14 days > 86°F |
| Saint Libory | Heat Zone 7 61 - 90 days > 86°F |
| Saint Peter | Heat Zone 7 61 - 90 days > 86°F |
| Sainte Marie | Heat Zone 6 46 - 60 days > 86°F |
| Salem | Heat Zone 7 61 - 90 days > 86°F |
| Sammons Point | Heat Zone 2 1 - 7 days > 86°F |
| San Jose | Heat Zone 4 15 - 30 days > 86°F |
| Sandoval | Heat Zone 6 46 - 60 days > 86°F |
| Sandwich | Heat Zone 2 1 - 7 days > 86°F |
| Sauget | Heat Zone 7 61 - 90 days > 86°F |
| Sauk Village | Heat Zone 1 < 1 days > 86°F |
| Saunemin | Heat Zone 2 1 - 7 days > 86°F |
| Savanna | Heat Zone 1 < 1 days > 86°F |
| Savoy | Heat Zone 2 1 - 7 days > 86°F |
| Sawyerville | Heat Zone 7 61 - 90 days > 86°F |
| Saybrook | Heat Zone 2 1 - 7 days > 86°F |
| Scales Mound | Heat Zone 1 < 1 days > 86°F |
| Schaumburg | Heat Zone 2 1 - 7 days > 86°F |
| Scheller | Heat Zone 7 61 - 90 days > 86°F |
| Schiller Park | Heat Zone 1 < 1 days > 86°F |
| Schram City | Heat Zone 7 61 - 90 days > 86°F |
| Sciota | Heat Zone 5 31 - 45 days > 86°F |
| Scioto Mills | Heat Zone 1 < 1 days > 86°F |
| Scott AFB | Heat Zone 7 61 - 90 days > 86°F |
| Scottville | Heat Zone 6 46 - 60 days > 86°F |
| Seaton | Heat Zone 4 15 - 30 days > 86°F |
| Seatonville | Heat Zone 3 8 - 14 days > 86°F |
| Secor | Heat Zone 4 15 - 30 days > 86°F |
| Seneca | Heat Zone 3 8 - 14 days > 86°F |
| Serena | Heat Zone 4 15 - 30 days > 86°F |
| Sesser | Heat Zone 7 61 - 90 days > 86°F |
| Seward | Heat Zone 1 < 1 days > 86°F |
| Seymour | Heat Zone 3 8 - 14 days > 86°F |
| Shabbona | Heat Zone 1 < 1 days > 86°F |
| Shannon | Heat Zone 1 < 1 days > 86°F |
| Shattuc | Heat Zone 5 31 - 45 days > 86°F |
| Shawneetown | Heat Zone 7 61 - 90 days > 86°F |
| Sheffield | Heat Zone 3 8 - 14 days > 86°F |
| Shelbyville | Heat Zone 6 46 - 60 days > 86°F |
| Sheldon | Heat Zone 2 1 - 7 days > 86°F |
| Sheridan | Heat Zone 3 8 - 14 days > 86°F |
| Sherman | Heat Zone 4 15 - 30 days > 86°F |
| Sherrard | Heat Zone 2 1 - 7 days > 86°F |
| Shiloh | Heat Zone 7 61 - 90 days > 86°F |
| Shipman | Heat Zone 6 46 - 60 days > 86°F |
| Shirland | Heat Zone 1 < 1 days > 86°F |
| Shirley | Heat Zone 4 15 - 30 days > 86°F |
| Shobonier | Heat Zone 6 46 - 60 days > 86°F |
| Shorewood | Heat Zone 2 1 - 7 days > 86°F |
| Shumway | Heat Zone 6 46 - 60 days > 86°F |
| Sibley | Heat Zone 2 1 - 7 days > 86°F |
| Sidell | Heat Zone 5 31 - 45 days > 86°F |
| Sidney | Heat Zone 4 15 - 30 days > 86°F |
| Sigel | Heat Zone 6 46 - 60 days > 86°F |
| Silvis | Heat Zone 1 < 1 days > 86°F |
| Simpson | Heat Zone 7 61 - 90 days > 86°F |
| Sims | Heat Zone 7 61 - 90 days > 86°F |
| Skokie | Heat Zone 1 < 1 days > 86°F |
| Sleepy Hollow | Heat Zone 1 < 1 days > 86°F |
| Smithboro | Heat Zone 6 46 - 60 days > 86°F |
| Smithfield | Heat Zone 5 31 - 45 days > 86°F |
| Smithshire | Heat Zone 4 15 - 30 days > 86°F |
| Smithton | Heat Zone 7 61 - 90 days > 86°F |
| Solon Mills | Heat Zone 1 < 1 days > 86°F |
| Somonauk | Heat Zone 1 < 1 days > 86°F |
| Sorento | Heat Zone 7 61 - 90 days > 86°F |
| South Barrington | Heat Zone 1 < 1 days > 86°F |
| South Beloit | Heat Zone 1 < 1 days > 86°F |
| South Chicago Heights | Heat Zone 1 < 1 days > 86°F |
| South Elgin | Heat Zone 1 < 1 days > 86°F |
| South Holland | Heat Zone 1 < 1 days > 86°F |
| South Jacksonville | Heat Zone 6 46 - 60 days > 86°F |
| South Pekin | Heat Zone 4 15 - 30 days > 86°F |
| South Roxana | Heat Zone 6 46 - 60 days > 86°F |
| South Wilmington | Heat Zone 2 1 - 7 days > 86°F |
| Southern View | Heat Zone 4 15 - 30 days > 86°F |
| Sparland | Heat Zone 4 15 - 30 days > 86°F |
| Sparta | Heat Zone 7 61 - 90 days > 86°F |
| Spaulding | Heat Zone 4 15 - 30 days > 86°F |
| Speer | Heat Zone 2 1 - 7 days > 86°F |
| Spillertown | Heat Zone 5 31 - 45 days > 86°F |
| Spring Bay | Heat Zone 3 8 - 14 days > 86°F |
| Spring Grove | Heat Zone 1 < 1 days > 86°F |
| Spring Valley | Heat Zone 3 8 - 14 days > 86°F |
| Springerton | Heat Zone 7 61 - 90 days > 86°F |
| Springfield | Heat Zone 4 15 - 30 days > 86°F |
| Standard | Heat Zone 3 8 - 14 days > 86°F |
| Standard City | Heat Zone 6 46 - 60 days > 86°F |
| Stanford | Heat Zone 4 15 - 30 days > 86°F |
| Staunton | Heat Zone 7 61 - 90 days > 86°F |
| Steeleville | Heat Zone 7 61 - 90 days > 86°F |
| Steger | Heat Zone 1 < 1 days > 86°F |
| Sterling | Heat Zone 3 8 - 14 days > 86°F |
| Sterling/Rock Falls | Heat Zone 3 8 - 14 days > 86°F |
| Steward | Heat Zone 1 < 1 days > 86°F |
| Stewardson | Heat Zone 6 46 - 60 days > 86°F |
| Stickney | Heat Zone 1 < 1 days > 86°F |
| Stillman Valley | Heat Zone 1 < 1 days > 86°F |
| Stockland | Heat Zone 3 8 - 14 days > 86°F |
| Stockton | Heat Zone 1 < 1 days > 86°F |
| Stone Park | Heat Zone 2 1 - 7 days > 86°F |
| Stonefort | Heat Zone 7 61 - 90 days > 86°F |
| Stonington | Heat Zone 5 31 - 45 days > 86°F |
| Stoy | Heat Zone 7 61 - 90 days > 86°F |
| Strasburg | Heat Zone 6 46 - 60 days > 86°F |
| Strawn | Heat Zone 2 1 - 7 days > 86°F |
| Streamwood | Heat Zone 2 1 - 7 days > 86°F |
| Streator | Heat Zone 4 15 - 30 days > 86°F |
| Stronghurst | Heat Zone 4 15 - 30 days > 86°F |
| Sublette | Heat Zone 2 1 - 7 days > 86°F |
| Sugar Grove | Heat Zone 1 < 1 days > 86°F |
| Sullivan | Heat Zone 5 31 - 45 days > 86°F |
| Summerfield | Heat Zone 7 61 - 90 days > 86°F |
| Summit | Heat Zone 1 < 1 days > 86°F |
| Summit Argo | Heat Zone 1 < 1 days > 86°F |
| Sumner | Heat Zone 7 61 - 90 days > 86°F |
| Sun River Terrace | Heat Zone 2 1 - 7 days > 86°F |
| Sunbury | Heat Zone 2 1 - 7 days > 86°F |
| Sunnyside | Heat Zone 1 < 1 days > 86°F |
| Sutter | Heat Zone 5 31 - 45 days > 86°F |
| Swansea | Heat Zone 7 61 - 90 days > 86°F |
| Sycamore | Heat Zone 1 < 1 days > 86°F |
| Symerton | Heat Zone 2 1 - 7 days > 86°F |
| Table Grove | Heat Zone 5 31 - 45 days > 86°F |
| Tallula | Heat Zone 4 15 - 30 days > 86°F |
| Tamaroa | Heat Zone 7 61 - 90 days > 86°F |
| Tamms | Heat Zone 7 61 - 90 days > 86°F |
| Tampico | Heat Zone 4 15 - 30 days > 86°F |
| Taylor Ridge | Heat Zone 3 8 - 14 days > 86°F |
| Taylor Springs | Heat Zone 7 61 - 90 days > 86°F |
| Taylorville | Heat Zone 4 15 - 30 days > 86°F |
| Techny | Heat Zone 1 < 1 days > 86°F |
| Tennessee | Heat Zone 5 31 - 45 days > 86°F |
| Teutopolis | Heat Zone 6 46 - 60 days > 86°F |
| Texico | Heat Zone 7 61 - 90 days > 86°F |
| Thawville | Heat Zone 3 8 - 14 days > 86°F |
| Thayer | Heat Zone 5 31 - 45 days > 86°F |
| Thebes | Heat Zone 7 61 - 90 days > 86°F |
| Third Lake | Heat Zone 1 < 1 days > 86°F |
| Thomasboro | Heat Zone 4 15 - 30 days > 86°F |
| Thompsonville | Heat Zone 6 46 - 60 days > 86°F |
| Thomson | Heat Zone 2 1 - 7 days > 86°F |
| Thornton | Heat Zone 1 < 1 days > 86°F |
| Tilden | Heat Zone 7 61 - 90 days > 86°F |
| Tilton | Heat Zone 5 31 - 45 days > 86°F |
| Timberlane | Heat Zone 1 < 1 days > 86°F |
| Time | Heat Zone 6 46 - 60 days > 86°F |
| Timewell | Heat Zone 5 31 - 45 days > 86°F |
| Tinley Park | Heat Zone 1 < 1 days > 86°F |
| Tiskilwa | Heat Zone 3 8 - 14 days > 86°F |
| Todds Point | Heat Zone 6 46 - 60 days > 86°F |
| Toledo | Heat Zone 5 31 - 45 days > 86°F |
| Tolono | Heat Zone 4 15 - 30 days > 86°F |
| Toluca | Heat Zone 4 15 - 30 days > 86°F |
| Tonica | Heat Zone 3 8 - 14 days > 86°F |
| Tonti | Heat Zone 7 61 - 90 days > 86°F |
| Topeka | Heat Zone 5 31 - 45 days > 86°F |
| Toulon | Heat Zone 2 1 - 7 days > 86°F |
| Tovey | Heat Zone 4 15 - 30 days > 86°F |
| Towanda | Heat Zone 3 8 - 14 days > 86°F |
| Tower Hill | Heat Zone 5 31 - 45 days > 86°F |
| Tower Lake | Heat Zone 1 < 1 days > 86°F |
| Tremont | Heat Zone 4 15 - 30 days > 86°F |
| Trenton | Heat Zone 7 61 - 90 days > 86°F |
| Trilla | Heat Zone 4 15 - 30 days > 86°F |
| Triumph | Heat Zone 3 8 - 14 days > 86°F |
| Trivoli | Heat Zone 3 8 - 14 days > 86°F |
| Trout Valley | Heat Zone 1 < 1 days > 86°F |
| Troy | Heat Zone 7 61 - 90 days > 86°F |
| Troy Grove | Heat Zone 3 8 - 14 days > 86°F |
| Tunnel Hill | Heat Zone 7 61 - 90 days > 86°F |
| Tuscola | Heat Zone 6 46 - 60 days > 86°F |
| Twin Grove | Heat Zone 4 15 - 30 days > 86°F |
| Ullin | Heat Zone 7 61 - 90 days > 86°F |
| Union | Heat Zone 1 < 1 days > 86°F |
| Union Grove | Heat Zone 3 8 - 14 days > 86°F |
| Union Hill | Heat Zone 2 1 - 7 days > 86°F |
| Unity | Heat Zone 7 61 - 90 days > 86°F |
| University Park | Heat Zone 1 < 1 days > 86°F |
| Upper Alton | Heat Zone 6 46 - 60 days > 86°F |
| Urbana | Heat Zone 2 1 - 7 days > 86°F |
| Ursa | Heat Zone 4 15 - 30 days > 86°F |
| Ustick | Heat Zone 3 8 - 14 days > 86°F |
| Utica | Heat Zone 4 15 - 30 days > 86°F |
| Valier | Heat Zone 7 61 - 90 days > 86°F |
| Valley City | Heat Zone 6 46 - 60 days > 86°F |
| Valmeyer | Heat Zone 7 61 - 90 days > 86°F |
| Van Orin | Heat Zone 3 8 - 14 days > 86°F |
| Vandalia | Heat Zone 5 31 - 45 days > 86°F |
| Varna | Heat Zone 4 15 - 30 days > 86°F |
| Venedy | Heat Zone 7 61 - 90 days > 86°F |
| Venetian Village | Heat Zone 1 < 1 days > 86°F |
| Venice | Heat Zone 7 61 - 90 days > 86°F |
| Vergennes | Heat Zone 7 61 - 90 days > 86°F |
| Vermilion | Heat Zone 5 31 - 45 days > 86°F |
| Vermont | Heat Zone 5 31 - 45 days > 86°F |
| Vernon | Heat Zone 6 46 - 60 days > 86°F |
| Vernon Hills | Heat Zone 1 < 1 days > 86°F |
| Verona | Heat Zone 2 1 - 7 days > 86°F |
| Versailles | Heat Zone 5 31 - 45 days > 86°F |
| Victoria | Heat Zone 3 8 - 14 days > 86°F |
| Vienna | Heat Zone 7 61 - 90 days > 86°F |
| Villa Grove | Heat Zone 5 31 - 45 days > 86°F |
| Villa Park | Heat Zone 2 1 - 7 days > 86°F |
| Villa Ridge | Heat Zone 7 61 - 90 days > 86°F |
| Village of Campton Hills | Heat Zone 1 < 1 days > 86°F |
| Viola | Heat Zone 4 15 - 30 days > 86°F |
| Virden | Heat Zone 5 31 - 45 days > 86°F |
| Virgil | Heat Zone 1 < 1 days > 86°F |
| Virginia | Heat Zone 6 46 - 60 days > 86°F |
| Volo | Heat Zone 1 < 1 days > 86°F |
| Wadsworth | Heat Zone 1 < 1 days > 86°F |
| Waggoner | Heat Zone 5 31 - 45 days > 86°F |
| Waldo | Heat Zone 3 8 - 14 days > 86°F |
| Walnut | Heat Zone 4 15 - 30 days > 86°F |
| Walnut Hill | Heat Zone 7 61 - 90 days > 86°F |
| Walsh | Heat Zone 7 61 - 90 days > 86°F |
| Walshville | Heat Zone 7 61 - 90 days > 86°F |
| Waltonville | Heat Zone 7 61 - 90 days > 86°F |
| Wamac | Heat Zone 6 46 - 60 days > 86°F |
| Wapella | Heat Zone 4 15 - 30 days > 86°F |
| Warren | Heat Zone 1 < 1 days > 86°F |
| Warrensburg | Heat Zone 6 46 - 60 days > 86°F |
| Warrenville | Heat Zone 3 8 - 14 days > 86°F |
| Warsaw | Heat Zone 5 31 - 45 days > 86°F |
| Wasco | Heat Zone 1 < 1 days > 86°F |
| Washburn | Heat Zone 4 15 - 30 days > 86°F |
| Washington | Heat Zone 4 15 - 30 days > 86°F |
| Washington Park | Heat Zone 7 61 - 90 days > 86°F |
| Wataga | Heat Zone 2 1 - 7 days > 86°F |
| Waterloo | Heat Zone 7 61 - 90 days > 86°F |
| Waterman | Heat Zone 1 < 1 days > 86°F |
| Watseka | Heat Zone 2 1 - 7 days > 86°F |
| Watson | Heat Zone 6 46 - 60 days > 86°F |
| Wauconda | Heat Zone 1 < 1 days > 86°F |
| Waukegan | Heat Zone 1 < 1 days > 86°F |
| Waverly | Heat Zone 6 46 - 60 days > 86°F |
| Wayne | Heat Zone 2 1 - 7 days > 86°F |
| Wayne City | Heat Zone 7 61 - 90 days > 86°F |
| Waynesville | Heat Zone 5 31 - 45 days > 86°F |
| Wedron | Heat Zone 4 15 - 30 days > 86°F |
| Weldon | Heat Zone 4 15 - 30 days > 86°F |
| Wellington | Heat Zone 3 8 - 14 days > 86°F |
| Wenona | Heat Zone 4 15 - 30 days > 86°F |
| Wenonah | Heat Zone 5 31 - 45 days > 86°F |
| West Brooklyn | Heat Zone 1 < 1 days > 86°F |
| West Chicago | Heat Zone 2 1 - 7 days > 86°F |
| West City | Heat Zone 7 61 - 90 days > 86°F |
| West Dundee | Heat Zone 1 < 1 days > 86°F |
| West Frankfort | Heat Zone 6 46 - 60 days > 86°F |
| West Jersey | Heat Zone 2 1 - 7 days > 86°F |
| West Liberty | Heat Zone 6 46 - 60 days > 86°F |
| West Peoria | Heat Zone 3 8 - 14 days > 86°F |
| West Point | Heat Zone 4 15 - 30 days > 86°F |
| West Salem | Heat Zone 7 61 - 90 days > 86°F |
| West Union | Heat Zone 6 46 - 60 days > 86°F |
| West York | Heat Zone 6 46 - 60 days > 86°F |
| Westchester | Heat Zone 2 1 - 7 days > 86°F |
| Western Springs | Heat Zone 2 1 - 7 days > 86°F |
| Westervelt | Heat Zone 5 31 - 45 days > 86°F |
| Westfield | Heat Zone 5 31 - 45 days > 86°F |
| Westmont | Heat Zone 3 8 - 14 days > 86°F |
| Westville | Heat Zone 5 31 - 45 days > 86°F |
| Wheaton | Heat Zone 3 8 - 14 days > 86°F |
| Wheeler | Heat Zone 6 46 - 60 days > 86°F |
| Wheeling | Heat Zone 1 < 1 days > 86°F |
| White Ash | Heat Zone 5 31 - 45 days > 86°F |
| White City | Heat Zone 7 61 - 90 days > 86°F |
| White Hall | Heat Zone 6 46 - 60 days > 86°F |
| White Heath | Heat Zone 4 15 - 30 days > 86°F |
| White Rock | Heat Zone 1 < 1 days > 86°F |
| Whittington | Heat Zone 7 61 - 90 days > 86°F |
| Williamsfield | Heat Zone 3 8 - 14 days > 86°F |
| Williamson | Heat Zone 7 61 - 90 days > 86°F |
| Williamsville | Heat Zone 4 15 - 30 days > 86°F |
| Willisville | Heat Zone 7 61 - 90 days > 86°F |
| Willow Hill | Heat Zone 6 46 - 60 days > 86°F |
| Willow Springs | Heat Zone 2 1 - 7 days > 86°F |
| Willowbrook | Heat Zone 2 1 - 7 days > 86°F |
| Wilmette | Heat Zone 1 < 1 days > 86°F |
| Wilmington | Heat Zone 2 1 - 7 days > 86°F |
| Wilsonville | Heat Zone 7 61 - 90 days > 86°F |
| Wilton | Heat Zone 2 1 - 7 days > 86°F |
| Winchester | Heat Zone 6 46 - 60 days > 86°F |
| Windsor | Heat Zone 6 46 - 60 days > 86°F |
| Winfield | Heat Zone 3 8 - 14 days > 86°F |
| Winnebago | Heat Zone 1 < 1 days > 86°F |
| Winnetka | Heat Zone 1 < 1 days > 86°F |
| Winslow | Heat Zone 1 < 1 days > 86°F |
| Winthrop Harbor | Heat Zone 1 < 1 days > 86°F |
| Witt | Heat Zone 6 46 - 60 days > 86°F |
| Wolf Lake | Heat Zone 7 61 - 90 days > 86°F |
| Wonder Lake | Heat Zone 1 < 1 days > 86°F |
| Wood Dale | Heat Zone 2 1 - 7 days > 86°F |
| Wood River | Heat Zone 6 46 - 60 days > 86°F |
| Woodhull | Heat Zone 2 1 - 7 days > 86°F |
| Woodland | Heat Zone 2 1 - 7 days > 86°F |
| Woodlawn | Heat Zone 7 61 - 90 days > 86°F |
| Woodridge | Heat Zone 3 8 - 14 days > 86°F |
| Woodside | Heat Zone 4 15 - 30 days > 86°F |
| Woodson | Heat Zone 6 46 - 60 days > 86°F |
| Woodstock | Heat Zone 1 < 1 days > 86°F |
| Woosung | Heat Zone 2 1 - 7 days > 86°F |
| Worden | Heat Zone 7 61 - 90 days > 86°F |
| Worth | Heat Zone 1 < 1 days > 86°F |
| Wrights | Heat Zone 6 46 - 60 days > 86°F |
| Wyanet | Heat Zone 3 8 - 14 days > 86°F |
| Wyoming | Heat Zone 2 1 - 7 days > 86°F |
| Xenia | Heat Zone 7 61 - 90 days > 86°F |
| Yale | Heat Zone 6 46 - 60 days > 86°F |
| Yates City | Heat Zone 3 8 - 14 days > 86°F |
| York Center | Heat Zone 3 8 - 14 days > 86°F |
| Yorkville | Heat Zone 2 1 - 7 days > 86°F |
| Zanesville | Heat Zone 5 31 - 45 days > 86°F |
| Zeigler | Heat Zone 7 61 - 90 days > 86°F |
| Zion | Heat Zone 1 < 1 days > 86°F |