| 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 Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| Average Last Frost Date: | Mar. 11 - Mar. 20 |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 95918 - Browns Valley, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 39 | 42 | 44 | 50 | 56 | 60 | 58 | 55 | 48 | 40 | 35 | 47 |
| Avg Max Temp (°F) | 55 | 59 | 63 | 69 | 79 | 87 | 93 | 93 | 87 | 77 | 63 | 56 | 73 |
| Avg Precip (In.) | 6.97 | 6.36 | 5.95 | 2.6 | 1.36 | .47 | .09 | .13 | .73 | 2.02 | 5.04 | 5.44 | 37.15 |