| 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. 21 - Dec. 31 |
| Average Last Frost Date: | Feb. 1 - Feb. 10 |
| 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 95993 - Yuba City, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 41 | 45 | 48 | 54 | 59 | 61 | 60 | 56 | 50 | 42 | 37 | 49 |
| Avg Max Temp (°F) | 55 | 61 | 66 | 74 | 82 | 90 | 96 | 95 | 89 | 80 | 64 | 55 | 76 |
| Avg Precip (In.) | 4.27 | 3.85 | 3.46 | 1.39 | .74 | .24 | .07 | .08 | .39 | 1.21 | 2.75 | 3.29 | 21.75 |