| 2023 Hardiness Zone: | Zone 10b: 35°F to 40°F Zone 10a: 30°F to 35°F |
| 2012 Hardiness Zone: | Zone 10a: 30°F to 35°F |
| 1990 Hardiness Zone: | Zone 10a: 30F to 35F |
| Average First Frost Date: | Frost Rare |
| Average Last Frost Date: | Frost Rare |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 94920 - Belvedere Tiburon, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 43 | 46 | 47 | 48 | 51 | 53 | 55 | 56 | 55 | 53 | 48 | 43 | 50 |
| Avg Max Temp (°F) | 57 | 61 | 63 | 66 | 68 | 71 | 72 | 73 | 74 | 71 | 64 | 58 | 66 |
| Avg Precip (In.) | 5.94 | 5.04 | 4.21 | 1.46 | .52 | .14 | .08 | .08 | .27 | 1.38 | 4.14 | 4.33 | 27.59 |