Placerville, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30 °F (low) to 59.8 °F (high). Annual precipitation averages 18.9 Inches. Placerville is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.2 °F | 39.3 °F | 1.09 in. |
| February | 15.7 °F | 42.4 °F | 1.01 in. |
| March | 22.2 °F | 50.1 °F | 1.65 in. |
| April | 28.5 °F | 56.8 °F | 1.56 in. |
| May | 35.9 °F | 66.7 °F | 1.22 in. |
| June | 43.3 °F | 78.1 °F | 0.75 in. |
| July | 49.1 °F | 81.8 °F | 2.91 in. |
| August | 48.2 °F | 79.2 °F | 2.38 in. |
| September | 40.9 °F | 73.0 °F | 2.25 in. |
| October | 31.1 °F | 61.6 °F | 1.52 in. |
| November | 21.4 °F | 49.2 °F | 1.44 in. |
| December | 10.9 °F | 38.9 °F | 1.08 in. |
| Annual | 30 °F | 59.8 °F | 18.86 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |