| 2023 Hardiness Zone: | 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. 21 - Nov. 30 |
| Average Last Frost Date: | Mar. 1 - Mar. 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 96022 - Cottonwood, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 39 | 42 | 46 | 53 | 60 | 65 | 62 | 58 | 50 | 41 | 36 | 49 |
| Avg Max Temp (°F) | 55 | 60 | 64 | 71 | 81 | 91 | 98 | 97 | 90 | 79 | 63 | 55 | 75 |
| Avg Precip (In.) | 5.46 | 4.47 | 4.13 | 1.98 | 1.48 | .69 | .11 | .24 | .49 | 1.56 | 3.4 | 3.96 | 27.97 |