Auburn, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 48.3 °F (low) to 72.3 °F (high). Annual precipitation averages 35.5 Inches. Auburn is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.8 °F | 54.9 °F | 6.5 in. |
| February | 39.4 °F | 58.4 °F | 6.24 in. |
| March | 42.0 °F | 62.7 °F | 5.5 in. |
| April | 44.4 °F | 67.0 °F | 3.1 in. |
| May | 50.1 °F | 75.7 °F | 1.69 in. |
| June | 56.3 °F | 85.1 °F | 0.44 in. |
| July | 61.6 °F | 92.5 °F | 0.02 in. |
| August | 61.3 °F | 91.6 °F | 0.05 in. |
| September | 57.2 °F | 86.3 °F | 0.22 in. |
| October | 50.3 °F | 75.7 °F | 1.64 in. |
| November | 42.4 °F | 62.8 °F | 3.58 in. |
| December | 37.3 °F | 54.4 °F | 6.53 in. |
| Annual | 48.3 °F | 72.3 °F | 35.51 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |