Grant Town, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.4 °F (low) to 63.6 °F (high). Annual precipitation averages 48.4 Inches. Grant Town is located in USDA Plant Hardiness Zone 6b. 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 | 21.3 °F | 39.3 °F | 3.72 in. |
| February | 22.9 °F | 42.5 °F | 3.29 in. |
| March | 29.3 °F | 51.9 °F | 4.08 in. |
| April | 39.1 °F | 65.5 °F | 4.03 in. |
| May | 49.1 °F | 74.0 °F | 4.85 in. |
| June | 57.9 °F | 81.2 °F | 4.74 in. |
| July | 62.1 °F | 84.6 °F | 5.27 in. |
| August | 60.9 °F | 83.6 °F | 4.05 in. |
| September | 53.7 °F | 77.8 °F | 3.68 in. |
| October | 41.8 °F | 65.9 °F | 3.39 in. |
| November | 32.3 °F | 53.6 °F | 3.41 in. |
| December | 26.0 °F | 43.0 °F | 3.89 in. |
| Annual | 41.4 °F | 63.6 °F | 48.4 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |