Henlawson, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.4 °F (low) to 68.1 °F (high). Annual precipitation averages 49.1 Inches. Henlawson 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 | 24.5 °F | 44.6 °F | 3.38 in. |
| February | 27.0 °F | 49.0 °F | 3.44 in. |
| March | 33.0 °F | 58.0 °F | 4.5 in. |
| April | 42.4 °F | 70.6 °F | 4.17 in. |
| May | 52.3 °F | 77.9 °F | 5.14 in. |
| June | 60.9 °F | 84.8 °F | 4.93 in. |
| July | 65.0 °F | 87.8 °F | 6.09 in. |
| August | 63.9 °F | 86.7 °F | 3.87 in. |
| September | 56.8 °F | 81.3 °F | 3.36 in. |
| October | 44.2 °F | 70.0 °F | 3.1 in. |
| November | 33.8 °F | 58.3 °F | 2.93 in. |
| December | 28.5 °F | 48.1 °F | 4.16 in. |
| Annual | 44.4 °F | 68.1 °F | 49.07 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 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |