Charlton Heights, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.7 °C (low) to 18.8 °C (high). Annual precipitation averages 1214.9 Millimeters. Charlton Heights 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 °C | 84.33 mm |
| February | -3.1 °C | 8.3 °C | 75.95 mm |
| March | 0.3 °C | 13.3 °C | 107.95 mm |
| April | 5.6 °C | 20.1 °C | 100.08 mm |
| May | 10.9 °C | 24.1 °C | 129.03 mm |
| June | 15.7 °C | 27.8 °C | 119.89 mm |
| July | 17.9 °C | 29.4 °C | 146.56 mm |
| August | 17.3 °C | 29 °C | 109.22 mm |
| September | 13.7 °C | 26.1 °C | 88.39 mm |
| October | 7 °C | 20.1 °C | 78.74 mm |
| November | 1.2 °C | 13.7 °C | 77.98 mm |
| December | -1.8 °C | 8.2 °C | 96.77 mm |
| Annual | 6.7 °C | 18.8 °C | 1214.89 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 75-100 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |