Harts, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 43.9 °F (low) to 68 °F (high). Annual precipitation averages 48.3 Inches. Harts 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 | 24.2 °F | 44.6 °F | 3.55 in. |
| February | 26.4 °F | 48.8 °F | 3.43 in. |
| March | 32.7 °F | 58.4 °F | 4.46 in. |
| April | 42.4 °F | 71.2 °F | 4.08 in. |
| May | 51.9 °F | 77.7 °F | 5.0 in. |
| June | 60.4 °F | 84.1 °F | 4.68 in. |
| July | 64.4 °F | 87.3 °F | 5.62 in. |
| August | 63.1 °F | 86.4 °F | 3.84 in. |
| September | 56.0 °F | 80.9 °F | 3.34 in. |
| October | 43.4 °F | 69.8 °F | 3.17 in. |
| November | 33.5 °F | 58.4 °F | 3.06 in. |
| December | 28.0 °F | 48.3 °F | 4.09 in. |
| Annual | 43.9 °F | 68 °F | 48.32 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 |