Piedmont, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 41.2 °F (low) to 64 °F (high). Annual precipitation averages 41 Inches. Piedmont is located in USDA Plant Hardiness Zone 7a. 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 | 22.1 °F | 39.4 °F | 2.79 in. |
| February | 23.3 °F | 43.0 °F | 2.8 in. |
| March | 29.8 °F | 51.6 °F | 3.67 in. |
| April | 38.8 °F | 65.6 °F | 3.61 in. |
| May | 48.2 °F | 74.2 °F | 4.39 in. |
| June | 57.2 °F | 81.7 °F | 4.18 in. |
| July | 61.5 °F | 85.9 °F | 4.0 in. |
| August | 60.0 °F | 84.7 °F | 3.55 in. |
| September | 53.1 °F | 78.2 °F | 3.71 in. |
| October | 42.0 °F | 66.3 °F | 2.94 in. |
| November | 32.3 °F | 53.7 °F | 2.47 in. |
| December | 26.1 °F | 43.2 °F | 2.92 in. |
| Annual | 41.2 °F | 64 °F | 41.03 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 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 | Dfb - Humid Continental Mild Summer, Wet All Year |