| 2023 Hardiness Zone: | Zone 10a: 30°F to 35°F Zone 7b: 5°F to 10°F Zone 8a: 10°F to 15°F Zone 8b: 15°F to 20°F Zone 9b: 25°F to 30°F Zone 9a: 20°F to 25°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 8a: 10°F to 15°F Zone 9b: 25°F to 30°F | |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F | |
| Average First Frost Date: | Nov. 11 - Nov. 20 | |
| Average Last Frost Date: | Mar. 21 - Mar. 31 | |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 92359 - Mentone, 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) | 63 | 66 | 68 | 74 | 79 | 88 | 95 | 95 | 90 | 81 | 71 | 64 | 78 |
| Avg Precip (In.) | 3.11 | 3.16 | 2.74 | .8 | .44 | .13 | .1 | .21 | .4 | .53 | .98 | 1.6 | 14.21 |