Placerville, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 47.8 °F (low) to 70.6 °F (high). Annual precipitation averages 39 Inches. Placerville is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.2 °F | 54.1 °F | 7.0 in. |
| February | 38.8 °F | 56.6 °F | 6.91 in. |
| March | 40.7 °F | 60.5 °F | 6.13 in. |
| April | 43.1 °F | 64.6 °F | 3.27 in. |
| May | 48.9 °F | 73.0 °F | 2.26 in. |
| June | 55.4 °F | 82.8 °F | 0.49 in. |
| July | 61.7 °F | 90.6 °F | 0.03 in. |
| August | 61.5 °F | 90.2 °F | 0.05 in. |
| September | 57.4 °F | 85.2 °F | 0.31 in. |
| October | 50.1 °F | 74.6 °F | 2.01 in. |
| November | 41.7 °F | 61.4 °F | 3.68 in. |
| December | 36.8 °F | 53.4 °F | 6.89 in. |
| Annual | 47.8 °F | 70.6 °F | 39.03 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |