| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F | |
| Average First Frost Date: | Jan. 11 - Jan. 20 | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 94514 - Byron, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 41 | 44 | 47 | 52 | 57 | 59 | 59 | 57 | 51 | 44 | 38 | 49 |
| Avg Max Temp (°F) | 55 | 61 | 66 | 73 | 79 | 86 | 91 | 91 | 87 | 78 | 65 | 55 | 74 |
| Avg Precip (In.) | 2.72 | 2.43 | 2.07 | .77 | .52 | .1 | .04 | .06 | .26 | .76 | 1.62 | 1.79 | 13.14 |