| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F | |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 92352 - Lake Arrowhead, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 33 | 34 | 38 | 43 | 51 | 57 | 58 | 53 | 44 | 36 | 32 | 42 |
| Avg Max Temp (°F) | 49 | 52 | 56 | 63 | 70 | 79 | 85 | 85 | 79 | 68 | 56 | 49 | 66 |
| Avg Precip (In.) | 8.57 | 9.15 | 8.24 | 2.59 | 1.33 | .25 | .11 | .34 | 1.11 | 2.08 | 3.52 | 5.27 | 42.57 |