| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| Average Last Frost Date: | Feb. 21 - Feb. 29 |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 95620 - Dixon, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 41 | 44 | 47 | 51 | 56 | 58 | 57 | 55 | 50 | 42 | 37 | 48 |
| Avg Max Temp (°F) | 54 | 61 | 66 | 73 | 81 | 88 | 93 | 93 | 89 | 79 | 64 | 55 | 75 |
| Avg Precip (In.) | 4.73 | 4.23 | 3.32 | 1.11 | .57 | .16 | .04 | .05 | .31 | 1.04 | 2.7 | 3.22 | 21.49 |