Green Bank, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.4 °F (low) to 60.3 °F (high). Annual precipitation averages 42.7 Inches. Green Bank is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.7 °F | 37.3 °F | 3.21 in. |
| February | 19.7 °F | 41.4 °F | 2.94 in. |
| March | 25.9 °F | 49.5 °F | 3.8 in. |
| April | 33.8 °F | 62.3 °F | 3.76 in. |
| May | 44.0 °F | 69.2 °F | 4.24 in. |
| June | 51.8 °F | 76.2 °F | 4.56 in. |
| July | 55.6 °F | 80.0 °F | 4.05 in. |
| August | 54.9 °F | 79.5 °F | 3.53 in. |
| September | 48.1 °F | 74.0 °F | 3.69 in. |
| October | 36.7 °F | 62.6 °F | 2.95 in. |
| November | 26.9 °F | 50.0 °F | 2.69 in. |
| December | 21.3 °F | 41.5 °F | 3.28 in. |
| Annual | 36.4 °F | 60.3 °F | 42.7 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |