| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F |
| 2012 Hardiness Zone: | 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. 11 - Mar. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 95420 - Caspar, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 41 | 42 | 43 | 45 | 48 | 49 | 50 | 49 | 46 | 42 | 39 | 45 |
| Avg Max Temp (°F) | 56 | 57 | 58 | 61 | 63 | 65 | 67 | 67 | 68 | 65 | 60 | 56 | 62 |
| Avg Precip (In.) | 7.6 | 7.8 | 6.79 | 2.97 | 1.65 | .5 | .16 | .36 | .92 | 2.68 | 5.82 | 6.71 | 43.97 |