Buckhannon, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.1 °C (low) to 17.5 °C (high). Annual precipitation averages 1260.3 Millimeters. Buckhannon is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.9 °C | 4.5 °C | 93.73 mm |
| February | -5 °C | 6.4 °C | 86.61 mm |
| March | -1.4 °C | 11.3 °C | 106.17 mm |
| April | 4 °C | 18.4 °C | 100.58 mm |
| May | 9.6 °C | 22.7 °C | 134.11 mm |
| June | 14.3 °C | 26.8 °C | 129.03 mm |
| July | 16.6 °C | 28.5 °C | 142.75 mm |
| August | 15.7 °C | 28.1 °C | 103.89 mm |
| September | 11.8 °C | 25.1 °C | 89.15 mm |
| October | 5.2 °C | 18.8 °C | 96.77 mm |
| November | -0.1 °C | 12.2 °C | 78.99 mm |
| December | -3.2 °C | 6.8 °C | 98.55 mm |
| Annual | 5.1 °C | 17.5 °C | 1260.33 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |