| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°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: | Jan. 21 - Jan. 31 | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 91320 - Newbury Park, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 41 | 41 | 43 | 45 | 49 | 53 | 56 | 57 | 55 | 50 | 43 | 40 | 48 |
| Avg Max Temp (°F) | 67 | 68 | 70 | 74 | 76 | 82 | 87 | 88 | 85 | 80 | 73 | 68 | 76 |
| Avg Precip (In.) | 4.23 | 4.25 | 3.13 | 1.05 | .29 | .05 | .03 | .07 | .27 | .44 | 1.59 | 2.42 | 17.83 |