Glen White, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.8 °C (low) to 16.7 °C (high). Annual precipitation averages 1183.9 Millimeters. Glen White 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 | -5.7 °C | 4.6 °C | 86.61 mm |
| February | -4.6 °C | 6.6 °C | 81.79 mm |
| March | -1.2 °C | 11.2 °C | 105.16 mm |
| April | 3.8 °C | 17.8 °C | 106.93 mm |
| May | 9 °C | 21.9 °C | 127 mm |
| June | 13.4 °C | 25.3 °C | 112.52 mm |
| July | 15.6 °C | 26.9 °C | 135.89 mm |
| August | 14.8 °C | 26.4 °C | 98.55 mm |
| September | 11.3 °C | 23.6 °C | 87.38 mm |
| October | 4.9 °C | 17.8 °C | 71.37 mm |
| November | -0.6 °C | 11.9 °C | 73.66 mm |
| December | -3.4 °C | 6.4 °C | 97.03 mm |
| Annual | 4.8 °C | 16.7 °C | 1183.89 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 6b : -20.6°C to -17.8°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 |