Newburg, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.2 °C (low) to 17 °C (high). Annual precipitation averages 1289 Millimeters. Newburg 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 | -5.8 °C | 4 °C | 98.55 mm |
| February | -4.9 °C | 5.9 °C | 90.42 mm |
| March | -1.3 °C | 10.8 °C | 108.2 mm |
| April | 4.2 °C | 18 °C | 109.22 mm |
| May | 9.6 °C | 22.4 °C | 129.03 mm |
| June | 14.2 °C | 26.3 °C | 127 mm |
| July | 16.4 °C | 28.1 °C | 143.51 mm |
| August | 15.7 °C | 27.6 °C | 108.2 mm |
| September | 12 °C | 24.8 °C | 94.23 mm |
| October | 5.6 °C | 18.4 °C | 89.92 mm |
| November | 0.3 °C | 11.9 °C | 86.36 mm |
| December | -3.2 °C | 6.3 °C | 104.39 mm |
| Annual | 5.2 °C | 17 °C | 1289.03 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |