Greenville, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.1 °C (low) to 19.8 °C (high). Annual precipitation averages 1287.8 Millimeters. Greenville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.9 °C | 6.8 °C | 93.98 mm |
| February | -2.5 °C | 9.3 °C | 86.87 mm |
| March | 0.7 °C | 14.2 °C | 107.44 mm |
| April | 5.9 °C | 21.2 °C | 119.38 mm |
| May | 11.6 °C | 25.2 °C | 133.86 mm |
| June | 16.3 °C | 29.1 °C | 130.56 mm |
| July | 18.6 °C | 30.7 °C | 149.61 mm |
| August | 18.1 °C | 30.1 °C | 113.03 mm |
| September | 14.2 °C | 27.1 °C | 88.9 mm |
| October | 7.3 °C | 20.9 °C | 80.26 mm |
| November | 1.2 °C | 14.3 °C | 78.99 mm |
| December | -1.8 °C | 8.7 °C | 104.9 mm |
| Annual | 7.1 °C | 19.8 °C | 1287.78 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |