| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 10a: 30°F to 35°F 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: | Mar. 1 - Mar. 10 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 95549 - Kneeland, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 39 | 39 | 41 | 44 | 50 | 53 | 53 | 51 | 46 | 41 | 38 | 44 |
| Avg Max Temp (°F) | 50 | 53 | 54 | 57 | 62 | 65 | 73 | 74 | 73 | 66 | 54 | 50 | 61 |
| Avg Precip (In.) | 9.37 | 10.74 | 13.99 | 4.77 | 1.78 | .87 | .12 | .28 | 1.71 | 3.15 | 11.38 | 12.51 | 70.66 |