| 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 9a: 20°F to 25°F Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F |
| Average First Frost Date: | Dec. 11 - Dec. 20 |
| Average Last Frost Date: | Feb. 11 - Feb. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 95045 - San Juan Bautista, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 41 | 42 | 43 | 47 | 50 | 52 | 52 | 51 | 47 | 41 | 37 | 45 |
| Avg Max Temp (°F) | 60 | 64 | 66 | 70 | 73 | 77 | 80 | 81 | 81 | 78 | 67 | 60 | 71 |
| Avg Precip (In.) | 3.18 | 2.86 | 2.69 | .96 | .33 | .08 | .05 | .07 | .32 | .75 | 1.89 | 2.02 | 15.21 |