| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F |
| Average First Frost Date: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Mar. 11 - Mar. 20 |
| 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 95928 - 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 | 47 | 40 | 35 | 47 |
| Avg Max Temp (°F) | 54 | 60 | 65 | 72 | 80 | 88 | 93 | 92 | 88 | 79 | 63 | 54 | 74 |
| Avg Precip (In.) | 5.29 | 4.59 | 4.41 | 1.61 | .89 | .48 | .05 | .16 | .59 | 1.39 | 3.56 | 3.72 | 26.73 |