| 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 | |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F | |
| Average First Frost Date: | Jan. 21 - Jan. 31 | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 95391 - Tracy, 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 | 43 | 37 | 49 |
| Avg Max Temp (°F) | 55 | 62 | 67 | 73 | 80 | 87 | 92 | 91 | 87 | 79 | 65 | 55 | 75 |
| Avg Precip (In.) | 2.6 | 2.33 | 2 | .75 | .47 | .1 | .04 | .06 | .26 | .72 | 1.58 | 1.69 | 12.59 |