Sand Fork, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.2 °C (low) to 18.5 °C (high). Annual precipitation averages 1221.8 Millimeters. Sand Fork 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.9 °C | 5.2 °C | 89.66 mm |
| February | -4.9 °C | 7.1 °C | 83.57 mm |
| March | -1.5 °C | 12.3 °C | 110.24 mm |
| April | 3.9 °C | 19.8 °C | 97.79 mm |
| May | 9.7 °C | 24.1 °C | 128.02 mm |
| June | 14.4 °C | 27.8 °C | 122.94 mm |
| July | 16.9 °C | 29.6 °C | 133.6 mm |
| August | 16.1 °C | 29.1 °C | 104.65 mm |
| September | 12.1 °C | 26.1 °C | 91.44 mm |
| October | 5.3 °C | 19.9 °C | 85.34 mm |
| November | -0.4 °C | 13.3 °C | 79.76 mm |
| December | -3.4 °C | 7.4 °C | 94.74 mm |
| Annual | 5.2 °C | 18.5 °C | 1221.75 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |