| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°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 | |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F | |
| Average First Frost Date: | Jan. 11 - Jan. 20 | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 95324 - Hilmar, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 40 | 43 | 45 | 51 | 56 | 59 | 59 | 56 | 49 | 41 | 36 | 48 |
| Avg Max Temp (°F) | 54 | 62 | 67 | 74 | 82 | 89 | 94 | 92 | 88 | 79 | 64 | 55 | 75 |
| Avg Precip (In.) | 2.41 | 2.3 | 2.1 | .86 | .45 | .06 | .03 | .03 | .29 | .69 | 1.39 | 1.59 | 12.21 |