Granville, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.6 °C (low) to 17.4 °C (high). Annual precipitation averages 1136.7 Millimeters. Granville is located in USDA Plant Hardiness Zone 6b. 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 | -5.6 °C | 4 °C | 87.12 mm |
| February | -4.7 °C | 5.8 °C | 80.52 mm |
| March | -1.2 °C | 10.9 °C | 95.76 mm |
| April | 4.3 °C | 18.2 °C | 98.04 mm |
| May | 9.9 °C | 23.1 °C | 111.51 mm |
| June | 14.7 °C | 27.2 °C | 106.43 mm |
| July | 17.1 °C | 29.1 °C | 121.92 mm |
| August | 16.4 °C | 28.6 °C | 98.04 mm |
| September | 12.6 °C | 25.3 °C | 85.6 mm |
| October | 6.1 °C | 18.7 °C | 79.25 mm |
| November | 0.8 °C | 11.8 °C | 79.25 mm |
| December | -2.9 °C | 6.2 °C | 93.22 mm |
| Annual | 5.6 °C | 17.4 °C | 1136.66 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |