| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°F | |
| 2012 Hardiness Zone: | Zone 10b: 35°F to 40°F | |
| 1990 Hardiness Zone: | Zone 10a: 30F to 35F | |
| Average First Frost Date: | No Frost | |
| Average Last Frost Date: | No Frost | |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 90606 - Whittier, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 45 | 47 | 49 | 51 | 56 | 59 | 63 | 64 | 62 | 57 | 49 | 45 | 54 |
| Avg Max Temp (°F) | 68 | 69 | 70 | 74 | 76 | 80 | 85 | 86 | 85 | 80 | 74 | 69 | 76 |
| Avg Precip (In.) | 3.19 | 3.61 | 2.86 | .71 | .27 | .08 | .02 | .11 | .31 | .43 | 1.14 | 1.76 | 14.49 |