Flemington, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.6 °F (low) to 63.7 °F (high). Annual precipitation averages 48.3 Inches. Flemington is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.6 °F | 40.1 °F | 3.71 in. |
| February | 23.2 °F | 43.2 °F | 3.4 in. |
| March | 29.9 °F | 52.8 °F | 4.06 in. |
| April | 39.7 °F | 65.6 °F | 4.05 in. |
| May | 49.4 °F | 73.5 °F | 4.76 in. |
| June | 58.1 °F | 80.7 °F | 4.68 in. |
| July | 62.2 °F | 83.8 °F | 5.53 in. |
| August | 60.8 °F | 82.9 °F | 4.03 in. |
| September | 53.7 °F | 77.6 °F | 3.68 in. |
| October | 41.7 °F | 65.9 °F | 3.38 in. |
| November | 32.2 °F | 54.2 °F | 3.16 in. |
| December | 26.2 °F | 44.0 °F | 3.87 in. |
| Annual | 41.6 °F | 63.7 °F | 48.31 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |