Belmont, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.6 °C (low) to 18 °C (high). Annual precipitation averages 1172.5 Millimeters. Belmont 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 | -5.8 °C | 4.3 °C | 86.87 mm |
| February | -4.9 °C | 6.3 °C | 81.28 mm |
| March | -1.1 °C | 11.7 °C | 105.92 mm |
| April | 4.3 °C | 19.1 °C | 96.77 mm |
| May | 10 °C | 23.6 °C | 119.89 mm |
| June | 15.2 °C | 27.8 °C | 122.43 mm |
| July | 17.6 °C | 29.6 °C | 124.71 mm |
| August | 16.8 °C | 29.2 °C | 100.33 mm |
| September | 12.7 °C | 25.9 °C | 91.19 mm |
| October | 5.8 °C | 19.4 °C | 76.71 mm |
| November | 0.2 °C | 12.7 °C | 77.47 mm |
| December | -3.2 °C | 6.6 °C | 88.9 mm |
| Annual | 5.6 °C | 18 °C | 1172.47 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 |