Vansant, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.8 °C (low) to 19.5 °C (high). Annual precipitation averages 1194.3 Millimeters. Vansant is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.8 °C | 7.2 °C | 85.85 mm |
| February | -2.6 °C | 9.5 °C | 84.58 mm |
| March | 0.7 °C | 14.4 °C | 105.66 mm |
| April | 5.8 °C | 20.8 °C | 107.44 mm |
| May | 10.8 °C | 24.6 °C | 122.94 mm |
| June | 15.8 °C | 27.8 °C | 119.89 mm |
| July | 17.7 °C | 29.7 °C | 139.95 mm |
| August | 17.3 °C | 28.8 °C | 105.92 mm |
| September | 13.8 °C | 26.4 °C | 83.31 mm |
| October | 6.9 °C | 20.7 °C | 75.69 mm |
| November | 1.1 °C | 14.6 °C | 67.82 mm |
| December | -1.4 °C | 9.2 °C | 95.25 mm |
| Annual | 6.8 °C | 19.5 °C | 1194.3 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°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 |