| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 96014 - Callahan, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 29 | 30 | 33 | 38 | 44 | 49 | 48 | 43 | 36 | 30 | 26 | 36 |
| Avg Max Temp (°F) | 44 | 50 | 55 | 62 | 70 | 78 | 86 | 85 | 79 | 67 | 51 | 44 | 64 |
| Avg Precip (In.) | 3.71 | 2.92 | 2.48 | 1.37 | 1.16 | .84 | .43 | .36 | .65 | 1.39 | 2.96 | 3.12 | 21.39 |