Van, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7 °C (low) to 18.6 °C (high). Annual precipitation averages 1248.2 Millimeters. Van 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.9 °C | 5.9 °C | 92.2 mm |
| February | -2.6 °C | 8.3 °C | 87.38 mm |
| March | 0.9 °C | 13.1 °C | 111 mm |
| April | 6.2 °C | 19.8 °C | 110.49 mm |
| May | 11.4 °C | 23.9 °C | 130.56 mm |
| June | 16 °C | 27.6 °C | 119.63 mm |
| July | 18.1 °C | 29.2 °C | 145.03 mm |
| August | 17.3 °C | 28.7 °C | 104.39 mm |
| September | 13.8 °C | 25.9 °C | 86.87 mm |
| October | 7 °C | 19.8 °C | 77.98 mm |
| November | 1.5 °C | 13.3 °C | 78.74 mm |
| December | -1.5 °C | 7.9 °C | 103.89 mm |
| Annual | 7 °C | 18.6 °C | 1248.16 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |