| 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: | Feb. 11 - Feb. 20 |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 95694 - Winters, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 41 | 43 | 47 | 52 | 57 | 59 | 58 | 56 | 50 | 42 | 37 | 48 |
| Avg Max Temp (°F) | 55 | 61 | 66 | 74 | 82 | 90 | 95 | 94 | 89 | 80 | 65 | 55 | 75 |
| Avg Precip (In.) | 5.1 | 4.59 | 3.53 | 1.05 | .61 | .13 | .04 | .05 | .26 | 1.03 | 2.86 | 3.43 | 22.67 |