| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F Zone 8b: 15°F to 20°F Zone 10a: 30°F to 35°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | BSh - Hot Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 92549 - Idyllwild, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 28 | 28 | 32 | 36 | 37 | 44 | 51 | 52 | 48 | 40 | 31 | 28 | 38 |
| Avg Max Temp (°F) | 53 | 54 | 58 | 62 | 69 | 79 | 83 | 82 | 78 | 69 | 60 | 54 | 67 |
| Avg Precip (In.) | 5.46 | 5.2 | 4.99 | 1.74 | .77 | .22 | .79 | .95 | 1.02 | 1.08 | 2.25 | 3.18 | 27.66 |