| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°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. 1 - Dec. 10 | |
| Average Last Frost Date: | Feb. 21 - Feb. 29 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 93221 - Exeter, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 40 | 44 | 47 | 53 | 59 | 63 | 62 | 58 | 50 | 41 | 36 | 49 |
| Avg Max Temp (°F) | 56 | 63 | 68 | 76 | 84 | 92 | 98 | 96 | 91 | 81 | 66 | 56 | 77 |
| Avg Precip (In.) | 2.26 | 2.12 | 2.37 | .83 | .4 | .12 | .01 | .03 | .29 | .61 | 1.23 | 1.48 | 11.76 |