| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°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 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 94801 - Richmond, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 43 | 45 | 47 | 49 | 52 | 55 | 56 | 57 | 56 | 53 | 48 | 43 | 50 |
| Avg Max Temp (°F) | 58 | 62 | 64 | 67 | 70 | 72 | 73 | 74 | 75 | 73 | 64 | 58 | 67 |
| Avg Precip (In.) | 4.92 | 4.41 | 3.71 | 1.41 | .47 | .13 | .07 | .09 | .28 | 1.25 | 3.59 | 3.48 | 23.8 |