Sierraville, California has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Annual precipitation averages 687.6 Millimeters. Sierraville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Jun. 11 - Jun. 20 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.6 °C | 7.1 °C | 117.6 mm |
| February | -5.3 °C | 8.8 °C | 118.36 mm |
| March | -2.9 °C | 11.7 °C | 96.01 mm |
| April | -0.9 °C | 14.7 °C | 45.47 mm |
| May | 2.4 °C | 19.5 °C | 32.26 mm |
| June | 5.4 °C | 24.9 °C | 12.19 mm |
| July | 8.4 °C | 30.1 °C | 7.87 mm |
| August | 6.9 °C | 29.8 °C | 6.35 mm |
| September | 3.9 °C | 26.4 °C | 14.22 mm |
| October | -0.3 °C | 20.1 °C | 43.43 mm |
| November | -4.2 °C | 12.3 °C | 65.79 mm |
| December | -6.4 °C | 6.7 °C | 128.02 mm |
| Annual | 0 °C | 17.7 °C | 687.57 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 11 - Jun. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |