| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 10a: 30°F to 35°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 10a: 30°F to 35°F Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F |
| Average First Frost Date: | Dec. 11 - Dec. 20 |
| 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 95023 - Hollister, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 39 | 40 | 41 | 45 | 49 | 50 | 51 | 49 | 45 | 39 | 35 | 43 |
| Avg Max Temp (°F) | 61 | 64 | 66 | 70 | 73 | 79 | 82 | 83 | 83 | 78 | 67 | 60 | 72 |
| Avg Precip (In.) | 2.88 | 2.76 | 2.46 | .83 | .33 | .05 | .05 | .07 | .34 | .68 | 1.88 | 1.69 | 14.02 |