Thurmond, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 43 °F (low) to 64.6 °F (high). Annual precipitation averages 46.6 Inches. Thurmond 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 | 23.5 °F | 42.0 °F | 3.37 in. |
| February | 25.8 °F | 46.2 °F | 3.2 in. |
| March | 31.6 °F | 54.8 °F | 4.29 in. |
| April | 40.9 °F | 67.1 °F | 4.13 in. |
| May | 50.5 °F | 74.4 °F | 4.8 in. |
| June | 59.1 °F | 80.1 °F | 4.75 in. |
| July | 63.1 °F | 83.1 °F | 5.05 in. |
| August | 62.0 °F | 82.5 °F | 3.94 in. |
| September | 55.5 °F | 77.1 °F | 3.48 in. |
| October | 43.2 °F | 66.3 °F | 2.94 in. |
| November | 33.0 °F | 55.7 °F | 2.91 in. |
| December | 27.6 °F | 45.7 °F | 3.75 in. |
| Annual | 43 °F | 64.6 °F | 46.61 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 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 | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |