| 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 9b: 25F to 30F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| 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 95937 - Dunnigan, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 40 | 43 | 46 | 52 | 57 | 59 | 58 | 55 | 49 | 41 | 36 | 48 |
| Avg Max Temp (°F) | 55 | 61 | 66 | 73 | 82 | 90 | 95 | 94 | 89 | 79 | 64 | 55 | 75 |
| Avg Precip (In.) | 4.33 | 3.83 | 3 | 1.18 | .62 | .14 | .04 | .05 | .28 | 1.01 | 2.43 | 3.18 | 20.08 |