Belington, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.4 °C (low) to 16.9 °C (high). Annual precipitation averages 1300 Millimeters. Belington is located in USDA Plant Hardiness Zone 6a. 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 | -6.6 °C | 4.1 °C | 97.03 mm |
| February | -5.7 °C | 6.1 °C | 95 mm |
| March | -2.1 °C | 10.8 °C | 112.01 mm |
| April | 3.3 °C | 17.8 °C | 111.51 mm |
| May | 8.7 °C | 22.1 °C | 138.18 mm |
| June | 13.5 °C | 25.9 °C | 133.86 mm |
| July | 15.8 °C | 27.8 °C | 143.51 mm |
| August | 15 °C | 27.3 °C | 99.31 mm |
| September | 11.1 °C | 24.4 °C | 95.5 mm |
| October | 4.4 °C | 18.4 °C | 88.39 mm |
| November | -0.9 °C | 11.8 °C | 77.47 mm |
| December | -4 °C | 6.4 °C | 108.2 mm |
| Annual | 4.4 °C | 16.9 °C | 1299.97 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |