| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F | |
| 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: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 92880 - Corona, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 42 | 44 | 45 | 48 | 52 | 56 | 60 | 61 | 59 | 53 | 45 | 41 | 50 |
| Avg Max Temp (°F) | 68 | 70 | 71 | 76 | 79 | 85 | 91 | 92 | 89 | 83 | 75 | 69 | 79 |
| Avg Precip (In.) | 2.9 | 2.94 | 2.38 | .7 | .21 | .05 | .02 | .13 | .27 | .37 | 1.03 | 1.55 | 12.56 |