Montana 2012 USDA Hardiness Zone Map
View the new 2023 Montana Hardiness Zone Map
| Zone 3a -40°F to -35°F | Zone 3b -35°F to -30°F | Zone 4a -30°F to -25°F | Zone 4b -25°F to -20°F |
| Zone 5a -20°F to -15°F | Zone 5b -15°F to -10°F | Zone 6a -10°F to -5°F | Zone 6b -5°F to 0°F |
Based on the 2012 USDA Hardiness Zone Map, this interactive version covers the state of Montana which ranges from USDA Zone 3a to USDA Zone 6b.
2012 USDA Hardiness Zone Maps for Neighboring States and Provinces
Related Montana Maps:
List of 2012 Hardiness Zones for Cities in Montana
| Location | Hardiness Zone |
|---|---|
| Absarokee | Zone 4b: -25°F to -20°F |
| Acton | Zone 4b: -25°F to -20°F |
| Agency | Zone 6a: -10°F to -5°F |
| Alberton | Zone 5b: -15°F to -10°F |
| Alder | Zone 5a: -20°F to -15°F |
| Alzada | Zone 4a: -30°F to -25°F |
| Amsterdam | Zone 4b: -25°F to -20°F |
| Anaconda | Zone 4b: -25°F to -20°F |
| Angela | Zone 4a: -30°F to -25°F |
| Antelope | Zone 3b: -35°F to -30°F |
| Apgar | Zone 5a: -20°F to -15°F |
| Arlee | Zone 5b: -15°F to -10°F |
| Ashland | Zone 4a: -30°F to -25°F |
| Augusta | Zone 4a: -30°F to -25°F |
| Avon | Zone 4a: -30°F to -25°F |
| Azure | Zone 4a: -30°F to -25°F |
| Babb | Zone 4a: -30°F to -25°F |
| Bainville | Zone 3b: -35°F to -30°F |
| Baker | Zone 4a: -30°F to -25°F |
| Ballantine | Zone 4b: -25°F to -20°F |
| Bannack | Zone 4b: -25°F to -20°F |
| Basin | Zone 4a: -30°F to -25°F |
| Batavia | Zone 5a: -20°F to -15°F |
| Bear Dance | Zone 5b: -15°F to -10°F |
| Bearcreek | Zone 4b: -25°F to -20°F |
| Beaver Creek | Zone 3b: -35°F to -30°F |
| Belfry | Zone 4b: -25°F to -20°F |
| Belgrade | Zone 4a: -30°F to -25°F |
| Belknap | Zone 6a: -10°F to -5°F |
| Belt | Zone 4a: -30°F to -25°F |
| Benzien | Zone 4a: -30°F to -25°F |
| Biddle | Zone 4a: -30°F to -25°F |
| Big Arm | Zone 6a: -10°F to -5°F |
| Big Hole Natl Battlefield | Zone 3b: -35°F to -30°F |
| Big Sandy | Zone 4a: -30°F to -25°F |
| Big Sky | Zone 4b: -25°F to -20°F |
| Big Sky Ski And Summer Resort | Zone 4b: -25°F to -20°F |
| Big Timber | Zone 4b: -25°F to -20°F |
| Bigfork | Zone 5b: -15°F to -10°F |
| Bighorn | Zone 4a: -30°F to -25°F |
| Billings | Zone 4b: -25°F to -20°F |
| Birney | Zone 4a: -30°F to -25°F |
| Birney Day School | Zone 4a: -30°F to -25°F |
| Black Eagle | Zone 4a: -30°F to -25°F |
| Bloomfield | Zone 4a: -30°F to -25°F |
| Boneau | Zone 4a: -30°F to -25°F |
| Bonner | Zone 5b: -15°F to -10°F |
| Bonner-West Riverside | Zone 5b: -15°F to -10°F |
| Boulder | Zone 4a: -30°F to -25°F |
| Box Elder | Zone 4a: -30°F to -25°F |
| Boyd | Zone 4b: -25°F to -20°F |
| Boyes | Zone 4a: -30°F to -25°F |
| Bozeman | Zone 4b: -25°F to -20°F |
| Brady | Zone 4a: -30°F to -25°F |
| Bredette | Zone 3b: -35°F to -30°F |
| Bridger | Zone 4b: -25°F to -20°F |
| Bridger Bowl Ski Area | Zone 4a: -30°F to -25°F |
| Broadus | Zone 4a: -30°F to -25°F |
| Broadview | Zone 4b: -25°F to -20°F |
| Brockton | Zone 3b: -35°F to -30°F |
| Brockway | Zone 3b: -35°F to -30°F |
| Browning | Zone 4a: -30°F to -25°F |
| Brusett | Zone 4a: -30°F to -25°F |
| Buffalo | Zone 4a: -30°F to -25°F |
| Busby | Zone 4a: -30°F to -25°F |
| Butte | Zone 4a: -30°F to -25°F |
| Bynum | Zone 4a: -30°F to -25°F |
| Camas | Zone 5b: -15°F to -10°F |
| Cameron | Zone 5a: -20°F to -15°F |
| Camp Three | Zone 4b: -25°F to -20°F |
| Canyon Creek | Zone 4b: -25°F to -20°F |
| Capitol | Zone 4a: -30°F to -25°F |
| Carbert | Zone 3b: -35°F to -30°F |
| Cardwell | Zone 4b: -25°F to -20°F |
| Carlton | Zone 5b: -15°F to -10°F |
| Carter | Zone 4a: -30°F to -25°F |
| Cascade | Zone 4a: -30°F to -25°F |
| Charlo | Zone 5b: -15°F to -10°F |
| Charlos Heights | Zone 5b: -15°F to -10°F |
| Chester | Zone 3b: -35°F to -30°F |
| Chinook | Zone 3b: -35°F to -30°F |
| Choteau | Zone 4b: -25°F to -20°F |
| Christina | Zone 4a: -30°F to -25°F |
| Churchill | Zone 4b: -25°F to -20°F |
| Circle | Zone 3b: -35°F to -30°F |
| Clancy | Zone 4b: -25°F to -20°F |
| Clinton | Zone 5a: -20°F to -15°F |
| Clyde Park | Zone 4b: -25°F to -20°F |
| Coffee Creek | Zone 4a: -30°F to -25°F |
| Cohagen | Zone 3b: -35°F to -30°F |
| Colstrip | Zone 4b: -25°F to -20°F |
| Columbia Falls | Zone 5a: -20°F to -15°F |
| Columbus | Zone 4b: -25°F to -20°F |
| Condon | Zone 5a: -20°F to -15°F |
| Conner | Zone 5a: -20°F to -15°F |
| Conrad | Zone 4a: -30°F to -25°F |
| Content | Zone 3b: -35°F to -30°F |
| Cooke City | Zone 4a: -30°F to -25°F |
| Coram | Zone 5a: -20°F to -15°F |
| Corvallis | Zone 5b: -15°F to -10°F |
| Corwin Springs | Zone 4b: -25°F to -20°F |
| Craig | Zone 4b: -25°F to -20°F |
| Crane | Zone 4a: -30°F to -25°F |
| Crow Agency | Zone 4a: -30°F to -25°F |
| Culbertson | Zone 3b: -35°F to -30°F |
| Custer | Zone 4a: -30°F to -25°F |
| Cut Bank | Zone 4a: -30°F to -25°F |
| Dagmar | Zone 3b: -35°F to -30°F |
| Daleview | Zone 3b: -35°F to -30°F |
| Darby | Zone 5b: -15°F to -10°F |
| Dayton | Zone 6a: -10°F to -5°F |
| De Borgia | Zone 5b: -15°F to -10°F |
| Decker | Zone 4a: -30°F to -25°F |
| Deer Lodge | Zone 4a: -30°F to -25°F |
| Dell | Zone 4b: -25°F to -20°F |
| Denton | Zone 3b: -35°F to -30°F |
| Dillon | Zone 4b: -25°F to -20°F |
| Discovery Basin Ski Area | Zone 4b: -25°F to -20°F |
| Divide | Zone 4b: -25°F to -20°F |
| Dixon | Zone 6a: -10°F to -5°F |
| Dodson | Zone 3b: -35°F to -30°F |
| Dooley | Zone 3b: -35°F to -30°F |
| Drummond | Zone 4a: -30°F to -25°F |
| Dupuyer | Zone 4a: -30°F to -25°F |
| Dutton | Zone 4a: -30°F to -25°F |
| East Glacier Park | Zone 4a: -30°F to -25°F |
| East Glacier Park Village | Zone 4a: -30°F to -25°F |
| East Helena | Zone 4b: -25°F to -20°F |
| East Missoula | Zone 5b: -15°F to -10°F |
| Edgar | Zone 4b: -25°F to -20°F |
| Ekalaka | Zone 4a: -30°F to -25°F |
| Elkhorn | Zone 4b: -25°F to -20°F |
| Elliston | Zone 4a: -30°F to -25°F |
| Elmo | Zone 6a: -10°F to -5°F |
| Emigrant | Zone 5a: -20°F to -15°F |
| Ennis | Zone 5a: -20°F to -15°F |
| Essex | Zone 4b: -25°F to -20°F |
| Ethridge | Zone 4a: -30°F to -25°F |
| Eureka | Zone 5a: -20°F to -15°F |
| Evaro | Zone 5a: -20°F to -15°F |
| Evergreen | Zone 5a: -20°F to -15°F |
| Fairfield | Zone 4b: -25°F to -20°F |
| Fairview | Zone 4a: -30°F to -25°F |
| Fallon | Zone 3b: -35°F to -30°F |
| Finley Point | Zone 6a: -10°F to -5°F |
| Fishtail | Zone 4b: -25°F to -20°F |
| Flaxville | Zone 4a: -30°F to -25°F |
| Florence | Zone 5b: -15°F to -10°F |
| Floweree | Zone 4a: -30°F to -25°F |
| Forest Grove | Zone 4a: -30°F to -25°F |
| Forest Hill Village | Zone 5b: -15°F to -10°F |
| Forsyth | Zone 4a: -30°F to -25°F |
| Fort Belknap | Zone 3b: -35°F to -30°F |
| Fort Belknap Agency | Zone 3b: -35°F to -30°F |
| Fort Benton | Zone 4a: -30°F to -25°F |
| Fort Harrison | Zone 4b: -25°F to -20°F |
| Fort Peck | Zone 4a: -30°F to -25°F |
| Fort Shaw | Zone 4a: -30°F to -25°F |
| Fort Smith | Zone 5a: -20°F to -15°F |
| Fortine | Zone 5a: -20°F to -15°F |
| Four Buttes | Zone 3b: -35°F to -30°F |
| Four Corners | Zone 4b: -25°F to -20°F |
| Fox Lake | Zone 4a: -30°F to -25°F |
| Frazer | Zone 3b: -35°F to -30°F |
| Frenchtown | Zone 5b: -15°F to -10°F |
| Froid | Zone 3b: -35°F to -30°F |
| Fromberg | Zone 4b: -25°F to -20°F |
| Galata | Zone 4a: -30°F to -25°F |
| Gallatin Gateway | Zone 4b: -25°F to -20°F |
| Gardiner | Zone 5a: -20°F to -15°F |
| Garneill | Zone 4a: -30°F to -25°F |
| Garrison | Zone 4a: -30°F to -25°F |
| Garryowen | Zone 4a: -30°F to -25°F |
| Geraldine | Zone 4a: -30°F to -25°F |
| Geyser | Zone 4a: -30°F to -25°F |
| Gibson Flats | Zone 4a: -30°F to -25°F |
| Gildford | Zone 3b: -35°F to -30°F |
| Glacier Natl Park | Zone 3b: -35°F to -30°F |
| Glasgow | Zone 4a: -30°F to -25°F |
| Glen | Zone 4b: -25°F to -20°F |
| Glendive | Zone 4a: -30°F to -25°F |
| Glentana | Zone 3b: -35°F to -30°F |
| Gold Creek | Zone 4a: -30°F to -25°F |
| Grantsdale | Zone 5b: -15°F to -10°F |
| Grass Range | Zone 4b: -25°F to -20°F |
| Great Falls | Zone 4a: -30°F to -25°F |
| Great Falls/Malmstrom AFB | Zone 4a: -30°F to -25°F |
| Greenough | Zone 4a: -30°F to -25°F |
| Greycliff | Zone 4b: -25°F to -20°F |
| Hall | Zone 4a: -30°F to -25°F |
| Hamilton | Zone 5b: -15°F to -10°F |
| Hammond | Zone 4a: -30°F to -25°F |
| Happys Inn | Zone 4b: -25°F to -20°F |
| Hardin | Zone 4b: -25°F to -20°F |
| Harlem | Zone 3b: -35°F to -30°F |
| Harlowton | Zone 4b: -25°F to -20°F |
| Harrison | Zone 5a: -20°F to -15°F |
| Hathaway | Zone 4a: -30°F to -25°F |
| Haugan | Zone 5b: -15°F to -10°F |
| Havre | Zone 4a: -30°F to -25°F |
| Havre North | Zone 4a: -30°F to -25°F |
| Hays | Zone 4a: -30°F to -25°F |
| Heart Butte | Zone 4a: -30°F to -25°F |
| Hebgen Lake | Zone 3b: -35°F to -30°F |
| Helena | Zone 4b: -25°F to -20°F |
| Helena Valley Northeast | Zone 4b: -25°F to -20°F |
| Helena Valley Northwest | Zone 4a: -30°F to -25°F |
| Helena Valley Southeast | Zone 4b: -25°F to -20°F |
| Helena Valley West Central | Zone 4b: -25°F to -20°F |
| Helena West Side | Zone 4b: -25°F to -20°F |
| Helmville | Zone 4a: -30°F to -25°F |
| Heron | Zone 6a: -10°F to -5°F |
| Herron | Zone 4a: -30°F to -25°F |
| Highwood | Zone 4a: -30°F to -25°F |
| Hilger | Zone 4a: -30°F to -25°F |
| Hingham | Zone 3b: -35°F to -30°F |
| Hinsdale | Zone 3b: -35°F to -30°F |
| Hobson | Zone 4a: -30°F to -25°F |
| Hogeland | Zone 3b: -35°F to -30°F |
| Homestead | Zone 3b: -35°F to -30°F |
| Hot Springs | Zone 5b: -15°F to -10°F |
| Hot Springs Recreation Area | Zone 4a: -30°F to -25°F |
| Hungry Horse | Zone 5b: -15°F to -10°F |
| Huntley | Zone 4b: -25°F to -20°F |
| Huson | Zone 5b: -15°F to -10°F |
| Hysham | Zone 4a: -30°F to -25°F |
| Ingomar | Zone 4a: -30°F to -25°F |
| Inverness | Zone 4a: -30°F to -25°F |
| Ismay | Zone 4a: -30°F to -25°F |
| Jackson | Zone 4a: -30°F to -25°F |
| Jardine | Zone 4b: -25°F to -20°F |
| Jefferson City | Zone 4b: -25°F to -20°F |
| Jette | Zone 6a: -10°F to -5°F |
| Joliet | Zone 4b: -25°F to -20°F |
| Joplin | Zone 4a: -30°F to -25°F |
| Jordan | Zone 3b: -35°F to -30°F |
| Judith Gap | Zone 4a: -30°F to -25°F |
| Kalispell | Zone 5b: -15°F to -10°F |
| Kerr | Zone 6a: -10°F to -5°F |
| Kevin | Zone 4a: -30°F to -25°F |
| Kicking Horse | Zone 5b: -15°F to -10°F |
| Kila | Zone 5a: -20°F to -15°F |
| King Arthur Park | Zone 4b: -25°F to -20°F |
| Kings Point | Zone 6a: -10°F to -5°F |
| Kinsey | Zone 4a: -30°F to -25°F |
| Kirby | Zone 4a: -30°F to -25°F |
| Klein | Zone 4b: -25°F to -20°F |
| Knife River | Zone 4a: -30°F to -25°F |
| Kremlin | Zone 3b: -35°F to -30°F |
| Lake Mary Ronan | Zone 5b: -15°F to -10°F |
| Lake McDonald | Zone 5a: -20°F to -15°F |
| Lakeside | Zone 5b: -15°F to -10°F |
| Lakeview | Zone 3b: -35°F to -30°F |
| Lambert | Zone 4a: -30°F to -25°F |
| Lame Deer | Zone 4a: -30°F to -25°F |
| Landusky | Zone 5a: -20°F to -15°F |
| Larslan | Zone 3b: -35°F to -30°F |
| Laurel | Zone 4b: -25°F to -20°F |
| Lavina | Zone 4b: -25°F to -20°F |
| Ledger | Zone 4a: -30°F to -25°F |
| Lewistown | Zone 4a: -30°F to -25°F |
| Lewistown Heights | Zone 4a: -30°F to -25°F |
| Libby | Zone 5b: -15°F to -10°F |
| Lima | Zone 5a: -20°F to -15°F |
| Lincoln | Zone 4a: -30°F to -25°F |
| Lindisfarne | Zone 6a: -10°F to -5°F |
| Lindsay | Zone 4a: -30°F to -25°F |
| Livingston | Zone 4b: -25°F to -20°F |
| Lloyd | Zone 4b: -25°F to -20°F |
| Locate | Zone 4a: -30°F to -25°F |
| Lockwood | Zone 4b: -25°F to -20°F |
| Lodge Grass | Zone 4a: -30°F to -25°F |
| Lodge Pole | Zone 4a: -30°F to -25°F |
| Logan | Zone 4b: -25°F to -20°F |
| Lolo | Zone 5b: -15°F to -10°F |
| Lolo Hot Springs | Zone 5a: -20°F to -15°F |
| Loma | Zone 3b: -35°F to -30°F |
| Lonepine | Zone 5b: -15°F to -10°F |
| Loring | Zone 3b: -35°F to -30°F |
| Lothair | Zone 4a: -30°F to -25°F |
| Lustre | Zone 4a: -30°F to -25°F |
| Malmstrom AFB | Zone 4a: -30°F to -25°F |
| Malta | Zone 3b: -35°F to -30°F |
| Manhattan | Zone 4b: -25°F to -20°F |
| Marion | Zone 4b: -25°F to -20°F |
| Marsh | Zone 4a: -30°F to -25°F |
| Martin City | Zone 5a: -20°F to -15°F |
| Martinsdale | Zone 4a: -30°F to -25°F |
| Marysville | Zone 4b: -25°F to -20°F |
| Maudlow | Zone 4b: -25°F to -20°F |
| Maxville | Zone 4b: -25°F to -20°F |
| McAllister | Zone 5a: -20°F to -15°F |
| McCabe | Zone 3b: -35°F to -30°F |
| McLeod | Zone 4b: -25°F to -20°F |
| Medicine Lake | Zone 3b: -35°F to -30°F |
| Melrose | Zone 4b: -25°F to -20°F |
| Melstone | Zone 4a: -30°F to -25°F |
| Melville | Zone 4a: -30°F to -25°F |
| Mildred | Zone 4a: -30°F to -25°F |
| Miles City | Zone 4a: -30°F to -25°F |
| Milltown | Zone 5b: -15°F to -10°F |
| Missoula | Zone 5b: -15°F to -10°F |
| Mizpah | Zone 3b: -35°F to -30°F |
| Moccasin | Zone 4b: -25°F to -20°F |
| Molt | Zone 4b: -25°F to -20°F |
| Monarch | Zone 4a: -30°F to -25°F |
| Montana City | Zone 4b: -25°F to -20°F |
| Moore | Zone 4a: -30°F to -25°F |
| Mosby | Zone 3b: -35°F to -30°F |
| Muddy | Zone 4a: -30°F to -25°F |
| Musselshell | Zone 4a: -30°F to -25°F |
| Nashua | Zone 4a: -30°F to -25°F |
| Neihart | Zone 3b: -35°F to -30°F |
| Niarada | Zone 5b: -15°F to -10°F |
| Norris | Zone 5a: -20°F to -15°F |
| North Browning | Zone 4a: -30°F to -25°F |
| Northwest Peak Scenic Area | Zone 5b: -15°F to -10°F |
| Noxon | Zone 6a: -10°F to -5°F |
| Nye | Zone 4b: -25°F to -20°F |
| Oilmont | Zone 4a: -30°F to -25°F |
| Old Agency | Zone 6a: -10°F to -5°F |
| Olive | Zone 4a: -30°F to -25°F |
| Olney | Zone 4b: -25°F to -20°F |
| Opheim | Zone 3b: -35°F to -30°F |
| Orchard Homes | Zone 5b: -15°F to -10°F |
| Otter | Zone 4a: -30°F to -25°F |
| Outlook | Zone 3b: -35°F to -30°F |
| Ovando | Zone 4a: -30°F to -25°F |
| Pablo | Zone 6a: -10°F to -5°F |
| Paradise | Zone 6a: -10°F to -5°F |
| Park City | Zone 4b: -25°F to -20°F |
| Parker School | Zone 4b: -25°F to -20°F |
| Peerless | Zone 4a: -30°F to -25°F |
| Pendroy | Zone 4a: -30°F to -25°F |
| Perma | Zone 6a: -10°F to -5°F |
| Philipsburg | Zone 4b: -25°F to -20°F |
| Piltzville | Zone 5a: -20°F to -15°F |
| Pinesdale | Zone 5b: -15°F to -10°F |
| Pioneer Junction | Zone 5b: -15°F to -10°F |
| Plains | Zone 6a: -10°F to -5°F |
| Plentywood | Zone 3b: -35°F to -30°F |
| Plevna | Zone 4a: -30°F to -25°F |
| Polaris | Zone 4a: -30°F to -25°F |
| Polebridge | Zone 4a: -30°F to -25°F |
| Polson | Zone 6a: -10°F to -5°F |
| Pompeys Pillar | Zone 4a: -30°F to -25°F |
| Pony | Zone 5a: -20°F to -15°F |
| Poplar | Zone 3b: -35°F to -30°F |
| Powderville | Zone 4a: -30°F to -25°F |
| Power | Zone 4a: -30°F to -25°F |
| Pray | Zone 4b: -25°F to -20°F |
| Proctor | Zone 5a: -20°F to -15°F |
| Pryor | Zone 4b: -25°F to -20°F |
| Radersburg | Zone 4b: -25°F to -20°F |
| Ramsay | Zone 4a: -30°F to -25°F |
| Rapelje | Zone 4b: -25°F to -20°F |
| Ravalli | Zone 5b: -15°F to -10°F |
| Raymond | Zone 3b: -35°F to -30°F |
| Raynesford | Zone 4a: -30°F to -25°F |
| Red Lodge | Zone 4b: -25°F to -20°F |
| Redstone | Zone 3a: -40°F to -35°F |
| Reed Point | Zone 4b: -25°F to -20°F |
| Reserve | Zone 3b: -35°F to -30°F |
| Rexford | Zone 5a: -20°F to -15°F |
| Richey | Zone 4a: -30°F to -25°F |
| Richland | Zone 3b: -35°F to -30°F |
| Ridgeway | Zone 4a: -30°F to -25°F |
| Ringling | Zone 4a: -30°F to -25°F |
| Riverbend | Zone 6a: -10°F to -5°F |
| Rivulet | Zone 5b: -15°F to -10°F |
| Roberts | Zone 5a: -20°F to -15°F |
| Rocky Boy's Agency | Zone 4a: -30°F to -25°F |
| Rocky Point | Zone 6a: -10°F to -5°F |
| Rollins | Zone 5b: -15°F to -10°F |
| Ronan | Zone 5b: -15°F to -10°F |
| Roscoe | Zone 5a: -20°F to -15°F |
| Rosebud | Zone 4a: -30°F to -25°F |
| Ross Creek Scenic Area | Zone 6a: -10°F to -5°F |
| Roundup | Zone 4b: -25°F to -20°F |
| Roy | Zone 4b: -25°F to -20°F |
| Rudyard | Zone 4a: -30°F to -25°F |
| Ryegate | Zone 4a: -30°F to -25°F |
| Saco | Zone 3b: -35°F to -30°F |
| Saddle Butte | Zone 4a: -30°F to -25°F |
| Saint Ignatius | Zone 5b: -15°F to -10°F |
| Saint Marie | Zone 4a: -30°F to -25°F |
| Saint Pierre | Zone 4b: -25°F to -20°F |
| Saint Regis | Zone 6a: -10°F to -5°F |
| Saint Xavier | Zone 4b: -25°F to -20°F |
| Saltese | Zone 5b: -15°F to -10°F |
| Sand Coulee | Zone 4a: -30°F to -25°F |
| Sand Springs | Zone 4a: -30°F to -25°F |
| Sanders | Zone 4a: -30°F to -25°F |
| Sangrey | Zone 4a: -30°F to -25°F |
| Santa Rita | Zone 4a: -30°F to -25°F |
| Savage | Zone 4a: -30°F to -25°F |
| Scobey | Zone 3b: -35°F to -30°F |
| Sedan | Zone 4a: -30°F to -25°F |
| Seeley Lake | Zone 4a: -30°F to -25°F |
| Shambo | Zone 4a: -30°F to -25°F |
| Shawmut | Zone 4a: -30°F to -25°F |
| Shelby | Zone 4a: -30°F to -25°F |
| Shepherd | Zone 4b: -25°F to -20°F |
| Sheridan | Zone 4b: -25°F to -20°F |
| Shonkin | Zone 4a: -30°F to -25°F |
| Sidney | Zone 4a: -30°F to -25°F |
| Silesia | Zone 4b: -25°F to -20°F |
| Silver Gate | Zone 4a: -30°F to -25°F |
| Silver Star | Zone 5a: -20°F to -15°F |
| Simms | Zone 4a: -30°F to -25°F |
| Snawmut | Zone 4a: -30°F to -25°F |
| Somers | Zone 5b: -15°F to -10°F |
| Sonnette | Zone 4a: -30°F to -25°F |
| South Browning | Zone 4a: -30°F to -25°F |
| Springdale | Zone 4b: -25°F to -20°F |
| Springhill | Zone 4b: -25°F to -20°F |
| Stanford | Zone 4a: -30°F to -25°F |
| Starr School | Zone 4a: -30°F to -25°F |
| Stevensville | Zone 5b: -15°F to -10°F |
| Stockett | Zone 4a: -30°F to -25°F |
| Stryker | Zone 4b: -25°F to -20°F |
| Sula | Zone 4b: -25°F to -20°F |
| Sumatra | Zone 4a: -30°F to -25°F |
| Sun Prairie | Zone 4a: -30°F to -25°F |
| Sun River | Zone 4a: -30°F to -25°F |
| Sunburst | Zone 4a: -30°F to -25°F |
| Superior | Zone 6a: -10°F to -5°F |
| Swan Lake | Zone 5a: -20°F to -15°F |
| Sweet Grass | Zone 4a: -30°F to -25°F |
| Sylvanite | Zone 5b: -15°F to -10°F |
| Teigen | Zone 4a: -30°F to -25°F |
| Terry | Zone 3b: -35°F to -30°F |
| Thompson Falls | Zone 6a: -10°F to -5°F |
| Three Forks | Zone 4b: -25°F to -20°F |
| Toston | Zone 4b: -25°F to -20°F |
| Townsend | Zone 4b: -25°F to -20°F |
| Trego | Zone 4b: -25°F to -20°F |
| Trout Creek | Zone 6a: -10°F to -5°F |
| Troy | Zone 6a: -10°F to -5°F |
| Turah | Zone 5a: -20°F to -15°F |
| Turner | Zone 3b: -35°F to -30°F |
| Turtle Lake | Zone 5b: -15°F to -10°F |
| Twin Bridges | Zone 4b: -25°F to -20°F |
| Two Dot | Zone 4b: -25°F to -20°F |
| Twodot | Zone 4b: -25°F to -20°F |
| Ulm | Zone 4a: -30°F to -25°F |
| Valier | Zone 4a: -30°F to -25°F |
| Van Norman | Zone 3b: -35°F to -30°F |
| Vananda | Zone 4a: -30°F to -25°F |
| Vandalia | Zone 3b: -35°F to -30°F |
| Vaughn | Zone 4a: -30°F to -25°F |
| Victor | Zone 5b: -15°F to -10°F |
| Vida | Zone 4a: -30°F to -25°F |
| Virgelle | Zone 4a: -30°F to -25°F |
| Virginia City | Zone 4b: -25°F to -20°F |
| Volborg | Zone 4a: -30°F to -25°F |
| Walkerville | Zone 4b: -25°F to -20°F |
| Warm Springs | Zone 4b: -25°F to -20°F |
| Warrick | Zone 4b: -25°F to -20°F |
| Weeksville | Zone 6a: -10°F to -5°F |
| West Glacier | Zone 5a: -20°F to -15°F |
| West Glendive | Zone 4a: -30°F to -25°F |
| West Havre | Zone 4a: -30°F to -25°F |
| West Yellowstone | Zone 3b: -35°F to -30°F |
| Westby | Zone 3b: -35°F to -30°F |
| White Haven | Zone 5b: -15°F to -10°F |
| White Sulphur Springs | Zone 4a: -30°F to -25°F |
| Whitefish | Zone 5a: -20°F to -15°F |
| Whitefish Mountain Resort | Zone 4b: -25°F to -20°F |
| Whitehall | Zone 4b: -25°F to -20°F |
| Whitetail | Zone 3b: -35°F to -30°F |
| Whitewater | Zone 3b: -35°F to -30°F |
| Whitlash | Zone 4a: -30°F to -25°F |
| Wibaux | Zone 4a: -30°F to -25°F |
| Wilborn | Zone 4a: -30°F to -25°F |
| Willard | Zone 4a: -30°F to -25°F |
| Willow Creek | Zone 4b: -25°F to -20°F |
| Wilsall | Zone 4a: -30°F to -25°F |
| Winifred | Zone 4a: -30°F to -25°F |
| Winnett | Zone 4a: -30°F to -25°F |
| Winston | Zone 4b: -25°F to -20°F |
| Wisdom | Zone 3a: -40°F to -35°F |
| Wise River | Zone 4a: -30°F to -25°F |
| Wolf Creek | Zone 4b: -25°F to -20°F |
| Wolf Point | Zone 3b: -35°F to -30°F |
| Woods Bay | Zone 5b: -15°F to -10°F |
| Worden | Zone 4b: -25°F to -20°F |
| Wye | Zone 5a: -20°F to -15°F |
| Wyola | Zone 4b: -25°F to -20°F |
| Yaak | Zone 5a: -20°F to -15°F |
| Yakt | Zone 4b: -25°F to -20°F |
| Yellowtail | Zone 5a: -20°F to -15°F |
| Zortman | Zone 4b: -25°F to -20°F |
| Zurich | Zone 3b: -35°F to -30°F |