Beckwourth, California has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 0.1 °C (low) to 17.4 °C (high). Annual precipitation averages 515.1 Millimeters. Beckwourth is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.2 °C | 6.6 °C | 92.71 mm |
| February | -4.8 °C | 8.6 °C | 80.01 mm |
| March | -2.7 °C | 11.8 °C | 75.95 mm |
| April | -0.9 °C | 14.4 °C | 36.07 mm |
| May | 2.1 °C | 19.3 °C | 28.96 mm |
| June | 5.4 °C | 25.2 °C | 12.7 mm |
| July | 8.1 °C | 30.4 °C | 5.84 mm |
| August | 7.1 °C | 29.7 °C | 5.59 mm |
| September | 3.9 °C | 26.2 °C | 10.67 mm |
| October | -0.2 °C | 19.2 °C | 25.91 mm |
| November | -4 °C | 11.6 °C | 46.23 mm |
| December | -6.4 °C | 5.9 °C | 94.49 mm |
| Annual | 0.1 °C | 17.4 °C | 515.13 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 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 |