Great Cacapon, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.7 °C (low) to 18.2 °C (high). Annual precipitation averages 990.3 Millimeters. Great Cacapon is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.3 °C | 4.9 °C | 69.09 mm |
| February | -4.4 °C | 6.8 °C | 55.37 mm |
| March | -0.8 °C | 11.6 °C | 85.34 mm |
| April | 4.6 °C | 18.6 °C | 80.52 mm |
| May | 9.8 °C | 23.4 °C | 95.5 mm |
| June | 14.7 °C | 28 °C | 98.04 mm |
| July | 17.4 °C | 30.6 °C | 86.61 mm |
| August | 16.4 °C | 29.4 °C | 86.36 mm |
| September | 12.6 °C | 25.8 °C | 104.39 mm |
| October | 5.9 °C | 19.4 °C | 77.98 mm |
| November | 0.8 °C | 12.9 °C | 72.14 mm |
| December | -2.9 °C | 6.8 °C | 78.99 mm |
| Annual | 5.7 °C | 18.2 °C | 990.33 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |