| 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: | Feb. 1 - Feb. 10 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 95148 - San Jose, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 43 | 44 | 46 | 51 | 55 | 58 | 58 | 56 | 51 | 44 | 40 | 49 |
| Avg Max Temp (°F) | 59 | 62 | 65 | 71 | 76 | 82 | 86 | 86 | 83 | 77 | 65 | 59 | 73 |
| Avg Precip (In.) | 3.71 | 3.33 | 3.06 | 1.09 | .47 | .1 | .07 | .09 | .23 | 1 | 2.07 | 2.37 | 17.6 |