| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°F | |
| 2012 Hardiness Zone: | Zone 10b: 35°F to 40°F Zone 10a: 30°F to 35°F | |
| 1990 Hardiness Zone: | Zone 10b: 35F to 40F | |
| Average First Frost Date: | Frost Rare | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 92117 - San Diego, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 47 | 49 | 51 | 54 | 58 | 61 | 64 | 66 | 64 | 59 | 51 | 47 | 56 |
| Avg Max Temp (°F) | 67 | 67 | 68 | 70 | 71 | 74 | 78 | 80 | 79 | 76 | 71 | 67 | 72 |
| Avg Precip (In.) | 2.47 | 2.26 | 2.37 | .8 | .25 | .1 | .03 | .1 | .25 | .45 | 1.13 | 1.39 | 11.59 |