Dorothy, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.2 °C (low) to 18.6 °C (high). Annual precipitation averages 1265.4 Millimeters. Dorothy 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 | -4.6 °C | 5.9 °C | 92.71 mm |
| February | -3.3 °C | 8.1 °C | 85.85 mm |
| March | -0.2 °C | 12.9 °C | 114.55 mm |
| April | 4.9 °C | 19.8 °C | 108.71 mm |
| May | 10.4 °C | 24 °C | 136.4 mm |
| June | 15.1 °C | 27.8 °C | 118.11 mm |
| July | 17.3 °C | 29.4 °C | 143.76 mm |
| August | 16.8 °C | 28.9 °C | 113.54 mm |
| September | 13.1 °C | 25.9 °C | 91.69 mm |
| October | 6.2 °C | 19.9 °C | 76.71 mm |
| November | 0.5 °C | 13.3 °C | 78.23 mm |
| December | -2.3 °C | 7.8 °C | 105.16 mm |
| Annual | 6.2 °C | 18.6 °C | 1265.42 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 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 |