Rocky Gap, Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.4 °C (low) to 18.1 °C (high). Annual precipitation averages 1063 Millimeters. Rocky Gap 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 | -4.9 °C | 5.9 °C | 83.57 mm |
| February | -3.7 °C | 7.9 °C | 74.42 mm |
| March | -0.4 °C | 12.4 °C | 98.04 mm |
| April | 4.4 °C | 18.7 °C | 97.54 mm |
| May | 9.6 °C | 23.1 °C | 115.82 mm |
| June | 14.1 °C | 26.7 °C | 99.31 mm |
| July | 16.2 °C | 28.6 °C | 104.65 mm |
| August | 15.6 °C | 28 °C | 84.58 mm |
| September | 11.8 °C | 25.1 °C | 83.31 mm |
| October | 5.3 °C | 19.3 °C | 70.1 mm |
| November | -0.2 °C | 13.2 °C | 65.79 mm |
| December | -3.2 °C | 7.7 °C | 85.85 mm |
| Annual | 5.4 °C | 18.1 °C | 1062.98 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |