Salt Rock, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.6 °C (low) to 19.6 °C (high). Annual precipitation averages 1173.5 Millimeters. Salt Rock 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 | -4.6 °C | 6.3 °C | 87.12 mm |
| February | -3.4 °C | 8.5 °C | 81.79 mm |
| March | 0.2 °C | 13.8 °C | 107.95 mm |
| April | 5.6 °C | 20.9 °C | 95 mm |
| May | 11.1 °C | 25.1 °C | 120.65 mm |
| June | 15.9 °C | 28.9 °C | 111 mm |
| July | 18.1 °C | 30.7 °C | 135.89 mm |
| August | 17.3 °C | 30.1 °C | 95 mm |
| September | 13.4 °C | 27.1 °C | 85.85 mm |
| October | 6.6 °C | 20.9 °C | 78.99 mm |
| November | 0.9 °C | 14.1 °C | 76.96 mm |
| December | -2.2 °C | 8.4 °C | 97.28 mm |
| Annual | 6.6 °C | 19.6 °C | 1173.48 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |