Quinwood, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.5 °F (low) to 59.2 °F (high). Annual precipitation averages 55.6 Inches. 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 | 19.6 °F | 37.3 °F | 4.36 in. |
| February | 22.0 °F | 40.2 °F | 3.9 in. |
| March | 28.0 °F | 48.5 °F | 5.15 in. |
| April | 38.2 °F | 60.5 °F | 4.62 in. |
| May | 46.9 °F | 68.7 °F | 5.52 in. |
| June | 55.1 °F | 74.8 °F | 5.65 in. |
| July | 59.1 °F | 78.1 °F | 6.04 in. |
| August | 57.4 °F | 77.2 °F | 4.59 in. |
| September | 51.5 °F | 72.1 °F | 4.07 in. |
| October | 41.1 °F | 61.8 °F | 3.51 in. |
| November | 30.9 °F | 50.5 °F | 3.59 in. |
| December | 24.1 °F | 40.3 °F | 4.56 in. |
| Annual | 39.5 °F | 59.2 °F | 55.56 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |