Bruceton Mills, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.6 °C (low) to 16.2 °C (high). Annual precipitation averages 1253.2 Millimeters. Bruceton Mills is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.6 °C | 2.8 °C | 97.79 mm |
| February | -5.6 °C | 4.8 °C | 92.96 mm |
| March | -2.1 °C | 9.6 °C | 106.43 mm |
| April | 3.5 °C | 17 °C | 108.71 mm |
| May | 8.9 °C | 22 °C | 125.98 mm |
| June | 13.6 °C | 25.9 °C | 118.11 mm |
| July | 15.8 °C | 27.9 °C | 128.78 mm |
| August | 15.1 °C | 27.3 °C | 116.08 mm |
| September | 11.1 °C | 24.1 °C | 91.44 mm |
| October | 4.9 °C | 17.6 °C | 85.09 mm |
| November | -0.2 °C | 10.8 °C | 80.77 mm |
| December | -3.8 °C | 5.1 °C | 101.09 mm |
| Annual | 4.6 °C | 16.2 °C | 1253.23 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |