| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°F Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 2012 Hardiness Zone: | Zone 10b: 35°F to 40°F Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 1990 Hardiness Zone: | Zone 10b: 35F to 40F | |
| Average First Frost Date: | Dec. 21 - Dec. 31 | |
| Average Last Frost Date: | Feb. 21 - Feb. 29 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 91307 - West Hills, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 41 | 42 | 43 | 45 | 49 | 53 | 57 | 58 | 56 | 50 | 43 | 40 | 48 |
| Avg Max Temp (°F) | 67 | 69 | 71 | 76 | 80 | 87 | 93 | 95 | 90 | 83 | 73 | 67 | 79 |
| Avg Precip (In.) | 3.89 | 4.09 | 3.54 | .81 | .27 | .05 | .02 | .16 | .27 | .52 | 1.47 | 2.1 | 17.19 |