Carpendale, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.2 °C (low) to 18.6 °C (high). Annual precipitation averages 1003.8 Millimeters. Carpendale 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 | -4.6 °C | 4.9 °C | 66.04 mm |
| February | -3.7 °C | 7.2 °C | 63.5 mm |
| March | -0.2 °C | 12.1 °C | 89.15 mm |
| April | 4.9 °C | 19.5 °C | 89.41 mm |
| May | 10.3 °C | 24.3 °C | 110.24 mm |
| June | 15.2 °C | 28.6 °C | 103.12 mm |
| July | 17.5 °C | 31 °C | 90.68 mm |
| August | 16.6 °C | 30.1 °C | 79.25 mm |
| September | 12.8 °C | 26.4 °C | 96.01 mm |
| October | 6.3 °C | 19.9 °C | 71.88 mm |
| November | 1 °C | 12.8 °C | 66.55 mm |
| December | -2.3 °C | 6.9 °C | 77.98 mm |
| Annual | 6.2 °C | 18.6 °C | 1003.81 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 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |