War, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 5.9 °C (low) to 18.6 °C (high). Annual precipitation averages 1162.8 Millimeters. War 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.8 °C | 6.3 °C | 88.65 mm |
| February | -3.6 °C | 8.4 °C | 82.04 mm |
| March | -0.4 °C | 13.1 °C | 104.65 mm |
| April | 4.6 °C | 19.7 °C | 107.44 mm |
| May | 10.1 °C | 23.7 °C | 120.4 mm |
| June | 14.8 °C | 27.3 °C | 113.03 mm |
| July | 17.2 °C | 29.1 °C | 125.48 mm |
| August | 16.6 °C | 28.6 °C | 101.09 mm |
| September | 12.7 °C | 25.7 °C | 83.82 mm |
| October | 5.8 °C | 19.8 °C | 71.63 mm |
| November | 0.1 °C | 13.5 °C | 70.36 mm |
| December | -2.9 °C | 8.1 °C | 94.23 mm |
| Annual | 5.9 °C | 18.6 °C | 1162.82 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Cfa - Humid Subtropical Climate |