| 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. 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 95938 - Durham, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 39 | 42 | 46 | 52 | 58 | 61 | 59 | 55 | 48 | 41 | 36 | 48 |
| Avg Max Temp (°F) | 54 | 60 | 65 | 72 | 80 | 88 | 94 | 93 | 88 | 79 | 63 | 54 | 74 |
| Avg Precip (In.) | 4.96 | 4.41 | 3.91 | 1.58 | .97 | .35 | .05 | .12 | .5 | 1.3 | 2.97 | 3.64 | 24.78 |