| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F 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 | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Nov. 21 - Nov. 30 | |
| Average Last Frost Date: | Mar. 11 - Mar. 20 | |
| 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 92583 - San Jacinto, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 38 | 40 | 42 | 48 | 53 | 58 | 59 | 55 | 48 | 40 | 36 | 46 |
| Avg Max Temp (°F) | 65 | 67 | 69 | 75 | 81 | 90 | 98 | 99 | 93 | 84 | 73 | 65 | 80 |
| Avg Precip (In.) | 2.72 | 2.58 | 2.25 | .7 | .41 | .12 | .17 | .36 | .39 | .46 | .83 | 1.24 | 12.23 |