| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°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: | Dec. 21 - Dec. 31 |
| Average Last Frost Date: | Feb. 11 - Feb. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 94510 - Benicia, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 39 | 42 | 44 | 46 | 50 | 54 | 55 | 56 | 54 | 50 | 44 | 39 | 48 |
| Avg Max Temp (°F) | 54 | 60 | 63 | 69 | 74 | 80 | 83 | 84 | 81 | 75 | 63 | 55 | 70 |
| Avg Precip (In.) | 4.88 | 4.16 | 3.22 | 1.43 | .68 | .13 | .05 | .07 | .28 | 1.28 | 2.7 | 3.34 | 22.22 |