| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F |
| 2012 Hardiness Zone: | Zone 10a: 30°F to 35°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: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 94538 - Fremont, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 43 | 45 | 47 | 51 | 54 | 56 | 57 | 55 | 52 | 45 | 40 | 49 |
| Avg Max Temp (°F) | 57 | 61 | 64 | 69 | 73 | 77 | 80 | 81 | 80 | 74 | 64 | 57 | 70 |
| Avg Precip (In.) | 3.22 | 3.04 | 2.58 | .99 | .43 | .11 | .04 | .07 | .21 | .94 | 1.92 | 2.2 | 15.74 |