Rock Cave, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5 °C (low) to 16.8 °C (high). Annual precipitation averages 1433.6 Millimeters. Rock Cave 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.8 °C | 4.1 °C | 112.27 mm |
| February | -5.1 °C | 5.9 °C | 100.58 mm |
| March | -1.4 °C | 10.8 °C | 121.67 mm |
| April | 3.9 °C | 17.8 °C | 117.09 mm |
| May | 9.3 °C | 22.1 °C | 149.1 mm |
| June | 14 °C | 25.8 °C | 141.73 mm |
| July | 16 °C | 27.4 °C | 151.38 mm |
| August | 15.1 °C | 26.9 °C | 124.21 mm |
| September | 11.8 °C | 24.1 °C | 96.27 mm |
| October | 5.3 °C | 18.2 °C | 107.95 mm |
| November | 0 °C | 11.8 °C | 96.01 mm |
| December | -3.2 °C | 6.6 °C | 115.32 mm |
| Annual | 5 °C | 16.8 °C | 1433.58 mm |
| 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 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 | Dfb - Humid Continental Mild Summer, Wet All Year |