Belmont, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.2 °C (low) to 18.8 °C (high). Annual precipitation averages 1129.3 Millimeters. Belmont is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.2 °C | 5.9 °C | 76.96 mm |
| February | -3.3 °C | 7.7 °C | 65.53 mm |
| March | 0.5 °C | 12.4 °C | 95 mm |
| April | 6.1 °C | 19 °C | 85.34 mm |
| May | 11.5 °C | 23.6 °C | 114.3 mm |
| June | 16.5 °C | 28.3 °C | 110.24 mm |
| July | 19.2 °C | 30.9 °C | 106.17 mm |
| August | 18.1 °C | 30 °C | 88.39 mm |
| September | 14.4 °C | 26.3 °C | 113.03 mm |
| October | 7.4 °C | 19.9 °C | 98.55 mm |
| November | 1.7 °C | 13.6 °C | 82.8 mm |
| December | -1.9 °C | 8.1 °C | 92.96 mm |
| Annual | 7.2 °C | 18.8 °C | 1129.27 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |