| 2023 Hardiness Zone: | 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 8b: 15F to 20F | |
| 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 92582 - San Jacinto, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 38 | 40 | 43 | 49 | 53 | 58 | 59 | 55 | 48 | 41 | 36 | 46 |
| Avg Max Temp (°F) | 66 | 67 | 69 | 75 | 82 | 90 | 99 | 100 | 93 | 84 | 73 | 66 | 80 |
| Avg Precip (In.) | 2.73 | 2.59 | 2.21 | .72 | .34 | .12 | .18 | .34 | .4 | .4 | .82 | 1.19 | 12.04 |