Moundsville, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 17.5 °C (high). Annual precipitation averages 1134.9 Millimeters. Moundsville 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 | -5.6 °C | 3.7 °C | 92.71 mm |
| February | -4.7 °C | 5.4 °C | 75.95 mm |
| March | -0.9 °C | 10.8 °C | 93.22 mm |
| April | 4.6 °C | 18.1 °C | 94.74 mm |
| May | 10.4 °C | 23.2 °C | 113.28 mm |
| June | 15.3 °C | 27.5 °C | 120.65 mm |
| July | 17.7 °C | 29.4 °C | 110.49 mm |
| August | 16.9 °C | 28.8 °C | 94.49 mm |
| September | 13 °C | 25.6 °C | 97.79 mm |
| October | 6.5 °C | 18.9 °C | 78.99 mm |
| November | 0.9 °C | 12.1 °C | 76.2 mm |
| December | -2.6 °C | 6.2 °C | 86.36 mm |
| Annual | 6 °C | 17.5 °C | 1134.87 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |