| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F 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: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 95482 - Ukiah, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 39 | 40 | 42 | 46 | 51 | 55 | 54 | 51 | 46 | 40 | 36 | 45 |
| Avg Max Temp (°F) | 56 | 59 | 63 | 69 | 75 | 83 | 90 | 90 | 86 | 76 | 62 | 55 | 72 |
| Avg Precip (In.) | 7.99 | 6.91 | 5.82 | 2.03 | 1.13 | .27 | .06 | .13 | .65 | 1.99 | 5.3 | 5.99 | 38.25 |