White Sulphur Springs, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.5 °C (low) to 17.6 °C (high). Annual precipitation averages 1051.6 Millimeters. White Sulphur Springs is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6 °C | 5.1 °C | 76.96 mm |
| February | -5 °C | 7.1 °C | 70.87 mm |
| March | -1.7 °C | 11.9 °C | 93.98 mm |
| April | 3.3 °C | 18.5 °C | 92.2 mm |
| May | 8.7 °C | 22.8 °C | 115.57 mm |
| June | 13.4 °C | 26.4 °C | 104.9 mm |
| July | 15.7 °C | 28.3 °C | 106.68 mm |
| August | 15.1 °C | 27.8 °C | 83.57 mm |
| September | 11.3 °C | 24.7 °C | 89.66 mm |
| October | 4.4 °C | 19 °C | 68.58 mm |
| November | -1.2 °C | 12.4 °C | 65.02 mm |
| December | -4.1 °C | 6.8 °C | 83.57 mm |
| Annual | 4.5 °C | 17.6 °C | 1051.56 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |