Twilight, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.7 °C (low) to 18.4 °C (high). Annual precipitation averages 1271.8 Millimeters. Twilight is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.1 °C | 5.8 °C | 95 mm |
| February | -2.8 °C | 8.1 °C | 89.66 mm |
| March | 0.6 °C | 12.8 °C | 115.82 mm |
| April | 5.8 °C | 19.6 °C | 113.28 mm |
| May | 11.1 °C | 23.7 °C | 131.83 mm |
| June | 15.6 °C | 27.3 °C | 120.65 mm |
| July | 17.7 °C | 28.9 °C | 145.8 mm |
| August | 17.1 °C | 28.4 °C | 107.7 mm |
| September | 13.5 °C | 25.6 °C | 88.9 mm |
| October | 6.7 °C | 19.5 °C | 77.72 mm |
| November | 1.2 °C | 13.1 °C | 78.99 mm |
| December | -1.7 °C | 7.7 °C | 106.43 mm |
| Annual | 6.7 °C | 18.4 °C | 1271.78 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |