Coal City, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 40.7 °F (low) to 61.1 °F (high). Annual precipitation averages 46.5 Inches. Coal City 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 | 21.8 °F | 39.9 °F | 3.35 in. |
| February | 23.8 °F | 43.2 °F | 3.15 in. |
| March | 30.0 °F | 51.2 °F | 4.13 in. |
| April | 39.5 °F | 62.5 °F | 4.16 in. |
| May | 48.4 °F | 70.1 °F | 5.01 in. |
| June | 56.1 °F | 76.2 °F | 4.45 in. |
| July | 59.8 °F | 79.3 °F | 5.37 in. |
| August | 58.3 °F | 78.4 °F | 3.85 in. |
| September | 52.3 °F | 73.2 °F | 3.49 in. |
| October | 41.4 °F | 63.1 °F | 2.8 in. |
| November | 31.1 °F | 52.9 °F | 2.89 in. |
| December | 26.0 °F | 43.3 °F | 3.8 in. |
| Annual | 40.7 °F | 61.1 °F | 46.45 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |