Danville, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.7 °C (low) to 19.3 °C (high). Annual precipitation averages 1268.5 Millimeters. Danville 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 | -4.3 °C | 6.4 °C | 93.98 mm |
| February | -3.1 °C | 8.6 °C | 89.15 mm |
| March | 0.3 °C | 13.6 °C | 113.03 mm |
| April | 5.7 °C | 20.6 °C | 109.98 mm |
| May | 11.3 °C | 24.8 °C | 137.41 mm |
| June | 15.9 °C | 28.4 °C | 116.84 mm |
| July | 18.1 °C | 30.1 °C | 146.05 mm |
| August | 17.5 °C | 29.6 °C | 105.16 mm |
| September | 13.6 °C | 26.8 °C | 88.9 mm |
| October | 6.8 °C | 20.7 °C | 81.28 mm |
| November | 0.9 °C | 14 °C | 80.77 mm |
| December | -2.1 °C | 8.4 °C | 105.92 mm |
| Annual | 6.7 °C | 19.3 °C | 1268.47 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 |