| 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: | Frost Rare |
| Average Last Frost Date: | Frost Rare |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 94560 - Newark, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 41 | 44 | 46 | 48 | 52 | 55 | 57 | 57 | 57 | 53 | 46 | 41 | 50 |
| Avg Max Temp (°F) | 58 | 61 | 64 | 68 | 71 | 76 | 78 | 78 | 78 | 73 | 64 | 58 | 69 |
| Avg Precip (In.) | 3.14 | 3.06 | 2.58 | 1 | .43 | .11 | .04 | .07 | .21 | .95 | 1.98 | 2.24 | 15.82 |