| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F |
| 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 95926 - Chico, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 35 | 39 | 42 | 45 | 51 | 57 | 61 | 59 | 55 | 48 | 40 | 35 | 47 |
| Avg Max Temp (°F) | 54 | 60 | 65 | 72 | 80 | 88 | 93 | 92 | 88 | 78 | 63 | 54 | 74 |
| Avg Precip (In.) | 5.34 | 4.66 | 4.43 | 1.64 | .94 | .47 | .05 | .16 | .59 | 1.4 | 3.53 | 3.77 | 26.97 |