Covel, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 5.5 °C (low) to 17.5 °C (high). Annual precipitation averages 1265.4 Millimeters. Covel is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5 °C | 5.3 °C | 98.3 mm |
| February | -3.9 °C | 7.3 °C | 91.19 mm |
| March | -0.6 °C | 12 °C | 110.49 mm |
| April | 4.4 °C | 18.6 °C | 117.6 mm |
| May | 9.7 °C | 22.8 °C | 134.62 mm |
| June | 14.2 °C | 26.2 °C | 123.19 mm |
| July | 16.3 °C | 27.8 °C | 141.48 mm |
| August | 15.6 °C | 27.3 °C | 99.82 mm |
| September | 12.2 °C | 24.5 °C | 88.39 mm |
| October | 5.5 °C | 18.7 °C | 78.23 mm |
| November | -0.1 °C | 12.4 °C | 78.99 mm |
| December | -2.8 °C | 7.1 °C | 103.12 mm |
| Annual | 5.5 °C | 17.5 °C | 1265.42 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°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 |