Powellton, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.1 °F (low) to 65.5 °F (high). Annual precipitation averages 48.6 Inches. Powellton is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.4 °F | 42.6 °F | 3.39 in. |
| February | 26.4 °F | 46.4 °F | 3.11 in. |
| March | 32.6 °F | 55.2 °F | 4.34 in. |
| April | 42.4 °F | 67.7 °F | 4.06 in. |
| May | 51.7 °F | 74.8 °F | 5.13 in. |
| June | 60.3 °F | 81.7 °F | 4.79 in. |
| July | 64.1 °F | 84.7 °F | 5.81 in. |
| August | 63.1 °F | 83.9 °F | 4.28 in. |
| September | 56.5 °F | 78.6 °F | 3.61 in. |
| October | 44.4 °F | 67.8 °F | 3.1 in. |
| November | 34.2 °F | 56.4 °F | 3.09 in. |
| December | 28.7 °F | 46.6 °F | 3.88 in. |
| Annual | 44.1 °F | 65.5 °F | 48.59 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |