| 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: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 94109 - San Francisco, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 44 | 46 | 47 | 49 | 51 | 53 | 55 | 56 | 56 | 53 | 48 | 44 | 50 |
| Avg Max Temp (°F) | 58 | 61 | 62 | 64 | 65 | 67 | 68 | 69 | 71 | 70 | 63 | 58 | 65 |
| Avg Precip (In.) | 4.87 | 4.21 | 3.38 | 1.27 | .49 | .14 | .05 | .09 | .27 | 1.25 | 3.14 | 3.26 | 22.41 |