Chapmanville, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.8 °C (low) to 20.1 °C (high). Annual precipitation averages 1221.7 Millimeters. Chapmanville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.2 °C | 7.1 °C | 87.88 mm |
| February | -2.9 °C | 9.5 °C | 85.85 mm |
| March | 0.4 °C | 14.6 °C | 111.76 mm |
| April | 5.7 °C | 21.6 °C | 102.87 mm |
| May | 11.2 °C | 25.6 °C | 128.02 mm |
| June | 15.9 °C | 29.4 °C | 118.11 mm |
| July | 18.2 °C | 31 °C | 145.29 mm |
| August | 17.7 °C | 30.4 °C | 98.3 mm |
| September | 13.7 °C | 27.4 °C | 85.34 mm |
| October | 6.6 °C | 21.2 °C | 78.74 mm |
| November | 0.9 °C | 14.7 °C | 76.2 mm |
| December | -2.1 °C | 9.1 °C | 103.38 mm |
| Annual | 6.8 °C | 20.1 °C | 1221.74 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |