| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F Zone 8b: 15°F to 20°F Zone 9b: 25°F to 30°F Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 9b: 25°F to 30°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F |
| Average First Frost Date: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 95631 - Foresthill, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 35 | 36 | 38 | 41 | 48 | 54 | 60 | 59 | 55 | 48 | 39 | 35 | 46 |
| Avg Max Temp (°F) | 53 | 55 | 59 | 65 | 73 | 82 | 89 | 89 | 84 | 73 | 60 | 53 | 70 |
| Avg Precip (In.) | 9.11 | 8.12 | 7.34 | 3.44 | 2.05 | .64 | .16 | .23 | 1.11 | 2.73 | 6.46 | 7.16 | 48.56 |