| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| Average Last Frost Date: | Feb. 21 - Feb. 29 |
| Koppen-Geiger Climate Zone: | Csa - Hot-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 95603 - Auburn, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 39 | 41 | 44 | 50 | 56 | 61 | 60 | 57 | 50 | 41 | 36 | 48 |
| Avg Max Temp (°F) | 54 | 58 | 61 | 67 | 76 | 84 | 91 | 90 | 85 | 75 | 61 | 55 | 71 |
| Avg Precip (In.) | 6.95 | 6.25 | 6.06 | 2.61 | 1.37 | .38 | .14 | .14 | .75 | 1.95 | 4.86 | 5.57 | 37.03 |