| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F | |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F | |
| Average First Frost Date: | Dec. 21 - Dec. 31 | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 95230 - Farmington, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 40 | 42 | 45 | 50 | 55 | 59 | 59 | 56 | 49 | 42 | 36 | 47 |
| Avg Max Temp (°F) | 54 | 61 | 65 | 72 | 81 | 88 | 94 | 93 | 88 | 79 | 64 | 54 | 74 |
| Avg Precip (In.) | 3.35 | 3.09 | 2.93 | 1.28 | .65 | .16 | .08 | .06 | .35 | .92 | 2.09 | 2.44 | 17.4 |