| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| Average Last Frost Date: | Mar. 1 - Mar. 10 |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 95661 - Roseville, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 40 | 42 | 45 | 50 | 56 | 59 | 58 | 55 | 49 | 42 | 36 | 47 |
| Avg Max Temp (°F) | 54 | 61 | 65 | 72 | 81 | 90 | 96 | 95 | 90 | 79 | 64 | 54 | 75 |
| Avg Precip (In.) | 4.24 | 4 | 3.8 | 1.59 | .68 | .23 | .11 | .1 | .44 | 1.24 | 3 | 3.16 | 22.58 |