Fort Gay, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 43.5 °F (low) to 67.8 °F (high). Annual precipitation averages 45.8 Inches. Fort Gay is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.0 °F | 44.3 °F | 3.34 in. |
| February | 26.1 °F | 48.3 °F | 3.24 in. |
| March | 32.1 °F | 58.2 °F | 4.34 in. |
| April | 41.8 °F | 70.2 °F | 3.75 in. |
| May | 51.5 °F | 77.5 °F | 4.85 in. |
| June | 60.2 °F | 84.3 °F | 4.38 in. |
| July | 64.3 °F | 87.4 °F | 5.06 in. |
| August | 63.1 °F | 86.7 °F | 3.67 in. |
| September | 55.7 °F | 81.1 °F | 3.23 in. |
| October | 42.8 °F | 69.9 °F | 3.07 in. |
| November | 32.8 °F | 58.1 °F | 3.08 in. |
| December | 27.9 °F | 47.9 °F | 3.74 in. |
| Annual | 43.5 °F | 67.8 °F | 45.75 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |