Vivian, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 5.7 °C (low) to 18.3 °C (high). Annual precipitation averages 1188.2 Millimeters. Vivian 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 | -4.9 °C | 6 °C | 88.65 mm |
| February | -3.7 °C | 8.2 °C | 84.58 mm |
| March | -0.4 °C | 12.8 °C | 107.44 mm |
| April | 4.6 °C | 19.3 °C | 111.51 mm |
| May | 9.9 °C | 23.4 °C | 125.98 mm |
| June | 14.7 °C | 27 °C | 120.14 mm |
| July | 16.9 °C | 28.7 °C | 134.11 mm |
| August | 16.3 °C | 28.3 °C | 95.5 mm |
| September | 12.5 °C | 25.4 °C | 82.55 mm |
| October | 5.8 °C | 19.4 °C | 72.64 mm |
| November | 0.1 °C | 13.2 °C | 70.36 mm |
| December | -2.9 °C | 7.8 °C | 94.74 mm |
| Annual | 5.7 °C | 18.3 °C | 1188.2 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 |