Bayard, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.6 °C (low) to 14.9 °C (high). Annual precipitation averages 1325.9 Millimeters. Bayard is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.9 °C | 1.9 °C | 108.2 mm |
| February | -7.1 °C | 3.8 °C | 101.6 mm |
| March | -3.8 °C | 8.2 °C | 115.57 mm |
| April | 1.3 °C | 15.6 °C | 115.32 mm |
| May | 6.9 °C | 20.1 °C | 137.92 mm |
| June | 11.6 °C | 24.3 °C | 133.6 mm |
| July | 13.7 °C | 26.2 °C | 138.94 mm |
| August | 12.7 °C | 25.6 °C | 101.85 mm |
| September | 8.8 °C | 22.4 °C | 99.31 mm |
| October | 2.8 °C | 16.4 °C | 84.84 mm |
| November | -2.2 °C | 9.6 °C | 81.79 mm |
| December | -5.6 °C | 4.2 °C | 106.93 mm |
| Annual | 2.6 °C | 14.9 °C | 1325.87 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |