| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°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 10b: 35F to 40F | |
| Average First Frost Date: | Jan. 11 - Jan. 20 | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 92131 - San Diego, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 42 | 44 | 46 | 49 | 54 | 58 | 61 | 63 | 61 | 54 | 47 | 42 | 52 |
| Avg Max Temp (°F) | 67 | 69 | 71 | 73 | 75 | 81 | 86 | 87 | 84 | 80 | 73 | 68 | 76 |
| Avg Precip (In.) | 2.91 | 2.66 | 2.87 | 1.03 | .33 | .1 | .02 | .1 | .28 | .52 | 1.3 | 1.69 | 13.81 |