Placerville, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.1 °C (low) to 15.4 °C (high). Annual precipitation averages 479 Millimeters. 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 | -10.4 °C | 4.1 °C | 27.69 mm |
| February | -9.1 °C | 5.8 °C | 25.65 mm |
| March | -5.4 °C | 10.1 °C | 41.91 mm |
| April | -1.9 °C | 13.8 °C | 39.62 mm |
| May | 2.2 °C | 19.3 °C | 30.99 mm |
| June | 6.3 °C | 25.6 °C | 19.05 mm |
| July | 9.5 °C | 27.7 °C | 73.91 mm |
| August | 9 °C | 26.2 °C | 60.45 mm |
| September | 4.9 °C | 22.8 °C | 57.15 mm |
| October | -0.5 °C | 16.4 °C | 38.61 mm |
| November | -5.9 °C | 9.6 °C | 36.58 mm |
| December | -11.7 °C | 3.8 °C | 27.43 mm |
| Annual | -1.1 °C | 15.4 °C | 479.04 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |