Quinwood, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.2 °C (low) to 15.1 °C (high). Annual precipitation averages 1411.2 Millimeters. Quinwood is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.9 °C | 2.9 °C | 110.74 mm |
| February | -5.6 °C | 4.6 °C | 99.06 mm |
| March | -2.2 °C | 9.2 °C | 130.81 mm |
| April | 3.4 °C | 15.8 °C | 117.35 mm |
| May | 8.3 °C | 20.4 °C | 140.21 mm |
| June | 12.8 °C | 23.8 °C | 143.51 mm |
| July | 15.1 °C | 25.6 °C | 153.42 mm |
| August | 14.1 °C | 25.1 °C | 116.59 mm |
| September | 10.8 °C | 22.3 °C | 103.38 mm |
| October | 5.1 °C | 16.6 °C | 89.15 mm |
| November | -0.6 °C | 10.3 °C | 91.19 mm |
| December | -4.4 °C | 4.6 °C | 115.82 mm |
| Annual | 4.2 °C | 15.1 °C | 1411.23 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |