| 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. 11 - Dec. 20 | |
| 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 92591 - Temecula, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 39 | 42 | 45 | 50 | 54 | 59 | 60 | 57 | 50 | 41 | 36 | 48 |
| Avg Max Temp (°F) | 67 | 68 | 70 | 76 | 81 | 89 | 96 | 96 | 91 | 83 | 74 | 67 | 80 |
| Avg Precip (In.) | 2.77 | 2.74 | 2.42 | .64 | .25 | .07 | .07 | .25 | .29 | .33 | .84 | 1.18 | 11.86 |