Hardiness Zones, also referred to as Growing Zones or Planting zones are defined by the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS). The zones in this map were created in 2023 using mean extreme climate data covering the period of 1991 to 2020. The previous version of this map released in 2012 was created using climate data from the period of 1976-2005. The data in the 2012 maps covered a cooler period than the 2023 maps.
| Location | 2023 Hardiness Zone | 2012 Hardiness Zone | 1990 Hardiness Zone |
|---|---|---|---|
| Adelanto | 8b - 15°F to 20°F | 8b - 15°F to 20°F | 8b - 15°F to 20°F |
| Agoura Hills | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Alameda | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Alamo | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Albany | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Alhambra | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Aliso Viejo | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Altadena | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| American Canyon | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Anaheim | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Antelope | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Antioch | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Apple Valley | 8b - 15°F to 20°F | 8b - 15°F to 20°F | 8b - 15°F to 20°F |
| Arcadia | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Arcata | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Arroyo Grande | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Artesia | 10a - 30°F to 35°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Arvin | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Ashland | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Atascadero | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Atwater | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Azusa | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Bakersfield | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Baldwin Park | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Banning | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 8b - 15°F to 20°F |
| Barstow | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Bay Point | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Beaumont | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Bell | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Bell Gardens | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Bellflower | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Belmont | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Benicia | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Berkeley | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Beverly Hills | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Bloomington | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Blythe | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Brawley | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Brea | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Brentwood | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Buena Park | 10a - 30°F to 35°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Burbank | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10b - 35°F to 40°F |
| Burlingame | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Calexico | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Camarillo | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10b - 35°F to 40°F |
| Cameron Park | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Campbell | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Carlsbad | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10b - 35°F to 40°F |
| Carmichael | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Carson | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Castaic | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Castro Valley | 9b - 25°F to 30°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Cathedral City | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Ceres | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Cerritos | 10a - 30°F to 35°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Cherryland | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Chico | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Chino | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Chino Hills | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Chowchilla | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Chula Vista | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10b - 35°F to 40°F |
| Citrus Heights | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Claremont | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Clearlake | 9a - 20°F to 25°F | 8b - 15°F to 20°F | 9a - 20°F to 25°F |
| Clovis | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Coachella | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Coalinga | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Colton | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Compton | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Concord | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Corcoran | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Corona | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Coronado | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Costa Mesa | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Covina | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Cudahy | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Culver City | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Cupertino | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Cypress | 10a - 30°F to 35°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Daly City | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Dana Point | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Danville | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Davis | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Delano | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9b - 25°F to 30°F |
| Desert Hot Springs | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Diamond Bar | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Dinuba | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Discovery Bay | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Dixon | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Downey | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Duarte | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Dublin | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| East Hemet | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 8b - 15°F to 20°F |
| East Los Angeles | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| East Niles | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| East Palo Alto | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| East Rancho Dominguez | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Eastvale | 9b - 25°F to 30°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| El Cajon | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| El Centro | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| El Dorado Hills | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| El Monte | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| El Segundo | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 11a - 40°F to 45°F |
| Elk Grove | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Encinitas | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 11a - 40°F to 45°F |
| Escondido | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Eureka | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Fair Oaks | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Fairfield | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Fallbrook | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Fillmore | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Florin | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Folsom | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Fontana | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Foothill Farms | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Foster City | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Fountain Valley | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Fremont | 9b - 25°F to 30°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Fresno | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Fullerton | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Galt | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Garden Grove | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Gardena | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Gilroy | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Glendale | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Glendora | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Goleta | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Granite Bay | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Greenfield | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Hacienda Heights | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Hanford | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Hawthorne | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Hayward | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Hemet | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 8b - 15°F to 20°F |
| Hercules | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Hermosa Beach | 11a - 40°F to 45°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Hesperia | 8b - 15°F to 20°F | 8b - 15°F to 20°F | 8b - 15°F to 20°F |
| Highland | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Hollister | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Huntington Beach | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Huntington Park | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Imperial | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Imperial Beach | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Indio | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Inglewood | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Irvine | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Isla Vista | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Kerman | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| La Habra | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| La Mesa | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| La Mirada | 10a - 30°F to 35°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| La Palma | 10a - 30°F to 35°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| La Presa | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| La Puente | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| La Quinta | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| La Verne | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Ladera Ranch | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Lafayette | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Laguna Beach | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Laguna Hills | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Laguna Niguel | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Laguna Woods | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Lake Elsinore | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Lake Forest | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Lakewood | 10a - 30°F to 35°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Lancaster | 8b - 15°F to 20°F | 8b - 15°F to 20°F | 8b - 15°F to 20°F |
| Lathrop | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Lawndale | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Lemon Grove | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10b - 35°F to 40°F |
| Lemoore | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Lennox | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Lincoln | 9a - 20°F to 25°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Linda | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Livermore | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Lodi | 9a - 20°F to 25°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Loma Linda | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Lomita | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Lompoc | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Long Beach | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Los Altos | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Los Angeles | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Los Banos | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9b - 25°F to 30°F |
| Los Gatos | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Lynwood | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Madera | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Manhattan Beach | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 11a - 40°F to 45°F |
| Manteca | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Marina | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Martinez | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Maywood | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| McKinleyville | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Mead Valley | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Menifee | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Menlo Park | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Merced | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Millbrae | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Milpitas | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Mission Viejo | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Modesto | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Monrovia | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Montclair | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Montebello | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Monterey | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Monterey Park | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Moorpark | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Moraga | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Moreno Valley | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Morgan Hill | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Mountain House | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Mountain View | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Murrieta | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Napa | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| National City | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Newark | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Newport Beach | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Nipomo | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Norco | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| North Highlands | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| North Tustin | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Norwalk | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Novato | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Oakdale | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Oakland | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Oakley | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Oceanside | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10b - 35°F to 40°F |
| Oildale | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Olivehurst | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Ontario | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Orange | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Orangevale | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Orcutt | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Orinda | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Oroville | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Oxnard | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10b - 35°F to 40°F |
| Pacific Grove | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Pacifica | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Palm Desert | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Palm Springs | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Palmdale | 9a - 20°F to 25°F | 8b - 15°F to 20°F | 8b - 15°F to 20°F |
| Palo Alto | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Paramount | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Parkway | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Pasadena | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Patterson | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Perris | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Petaluma | 9a - 20°F to 25°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Pico Rivera | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Pinole | 9b - 25°F to 30°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Pittsburg | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Placentia | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Pleasant Hill | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Pleasanton | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Pomona | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Port Hueneme | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10b - 35°F to 40°F |
| Porterville | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Poway | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Prunedale | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Ramona | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Rancho Cordova | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Rancho Cucamonga | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Rancho Mirage | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Rancho Palos Verdes | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Rancho San Diego | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Rancho Santa Margarita | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Redding | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Redlands | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Redondo Beach | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Redwood City | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Reedley | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Rialto | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Richmond | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Ridgecrest | 8b - 15°F to 20°F | 8b - 15°F to 20°F | 9a - 20°F to 25°F |
| Rio Linda | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Ripon | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Riverbank | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Riverside | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Rocklin | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Rohnert Park | 9a - 20°F to 25°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Rosamond | 8b - 15°F to 20°F | 8b - 15°F to 20°F | 8b - 15°F to 20°F |
| Rosedale | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Rosemead | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Rosemont | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Roseville | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Rowland Heights | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Sacramento | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Salinas | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| San Bernardino | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| San Bruno | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| San Carlos | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| San Clemente | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| San Diego | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| San Dimas | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| San Fernando | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| San Francisco | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| San Gabriel | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| San Jacinto | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 8b - 15°F to 20°F |
| San Jose | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| San Juan Capistrano | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| San Leandro | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| San Lorenzo | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| San Luis Obispo | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| San Marcos | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| San Mateo | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| San Pablo | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| San Rafael | 9b - 25°F to 30°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| San Ramon | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Sanger | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Santa Ana | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Santa Barbara | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Santa Clara | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Santa Clarita | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Santa Cruz | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Santa Fe Springs | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| Santa Maria | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Santa Monica | 11a - 40°F to 45°F | 10b - 35°F to 40°F | 11a - 40°F to 45°F |
| Santa Paula | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Santa Rosa | 9a - 20°F to 25°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Santee | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Saratoga | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Seal Beach | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Seaside | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Selma | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Shafter | 9a - 20°F to 25°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Simi Valley | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10b - 35°F to 40°F |
| Soledad | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| South El Monte | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| South Gate | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| South Lake Tahoe | 6b - -5°F to 0°F | 6b - -5°F to 0°F | 6b - -5°F to 0°F |
| South Pasadena | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| South San Francisco | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10a - 30°F to 35°F |
| South San Jose Hills | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Stanford | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Stanton | 10a - 30°F to 35°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Stockton | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 9b - 25°F to 30°F |
| Sunnyvale | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Susanville | 7a - 0°F to 5°F | 7a - 0°F to 5°F | 7a - 0°F to 5°F |
| Temecula | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Temple City | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Thousand Oaks | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10b - 35°F to 40°F |
| Torrance | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Tracy | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Truckee | 6a - -10°F to -5°F | 6a - -10°F to -5°F | 6a - -10°F to -5°F |
| Tulare | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Turlock | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Tustin | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Twentynine Palms | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Ukiah | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Union City | 9b - 25°F to 30°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Upland | 10a - 30°F to 35°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Vacaville | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Valinda | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Valle Vista | 9b - 25°F to 30°F | 9a - 20°F to 25°F | 8b - 15°F to 20°F |
| Vallejo | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Victorville | 8b - 15°F to 20°F | 8b - 15°F to 20°F | 8b - 15°F to 20°F |
| Vincent | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9a - 20°F to 25°F |
| Vineyard | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Visalia | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Vista | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Walnut | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Walnut Creek | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Walnut Park | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Wasco | 9a - 20°F to 25°F | 9a - 20°F to 25°F | 9b - 25°F to 30°F |
| Watsonville | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| West Carson | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| West Covina | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| West Hollywood | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| West Puente Valley | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| West Rancho Dominguez | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| West Sacramento | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Westminster | 10a - 30°F to 35°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Westmont | 10b - 35°F to 40°F | 10b - 35°F to 40°F | 10b - 35°F to 40°F |
| Whittier | 10b - 35°F to 40°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Wildomar | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Windsor | 9a - 20°F to 25°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Winter Gardens | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 9b - 25°F to 30°F |
| Woodcrest | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9a - 20°F to 25°F |
| Woodland | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 10a - 30°F to 35°F |
| Yorba Linda | 10a - 30°F to 35°F | 10a - 30°F to 35°F | 10a - 30°F to 35°F |
| Yuba City | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Yucaipa | 9b - 25°F to 30°F | 9b - 25°F to 30°F | 9b - 25°F to 30°F |
| Yucca Valley | 9a - 20°F to 25°F | 8b - 15°F to 20°F | 9a - 20°F to 25°F |