| 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 9a: 20F to 25F | |
| 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: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 92555 - Moreno Valley, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 39 | 41 | 42 | 45 | 50 | 55 | 60 | 61 | 58 | 51 | 43 | 39 | 49 |
| Avg Max Temp (°F) | 65 | 67 | 68 | 75 | 80 | 89 | 96 | 97 | 91 | 83 | 73 | 66 | 79 |
| Avg Precip (In.) | 3.08 | 3.02 | 2.72 | .78 | .43 | .13 | .12 | .25 | .44 | .48 | .92 | 1.49 | 13.85 |