Mullens, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 42.5 °F (low) to 65 °F (high). Annual precipitation averages 48.8 Inches. Mullens is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.2 °F | 42.5 °F | 3.96 in. |
| February | 25.4 °F | 46.5 °F | 3.62 in. |
| March | 31.2 °F | 55.0 °F | 4.21 in. |
| April | 40.1 °F | 67.3 °F | 4.48 in. |
| May | 50.1 °F | 74.6 °F | 5.19 in. |
| June | 58.6 °F | 81.0 °F | 4.5 in. |
| July | 62.7 °F | 84.0 °F | 5.29 in. |
| August | 61.6 °F | 82.9 °F | 4.0 in. |
| September | 55.0 °F | 77.8 °F | 3.36 in. |
| October | 42.5 °F | 67.2 °F | 3.07 in. |
| November | 32.2 °F | 55.5 °F | 3.17 in. |
| December | 27.0 °F | 45.7 °F | 3.97 in. |
| Annual | 42.5 °F | 65 °F | 48.82 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |