Lumberport, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5 °C (low) to 17.8 °C (high). Annual precipitation averages 1227.1 Millimeters. Lumberport is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.1 °C | 4.4 °C | 93.98 mm |
| February | -5.2 °C | 6.2 °C | 86.36 mm |
| March | -1.6 °C | 11.7 °C | 105.92 mm |
| April | 3.9 °C | 19 °C | 101.35 mm |
| May | 9.3 °C | 23.6 °C | 122.17 mm |
| June | 14.3 °C | 27.7 °C | 119.89 mm |
| July | 16.7 °C | 29.3 °C | 135.38 mm |
| August | 16 °C | 28.7 °C | 103.12 mm |
| September | 12 °C | 25.5 °C | 91.69 mm |
| October | 5.1 °C | 18.9 °C | 85.6 mm |
| November | -0.3 °C | 12.3 °C | 83.57 mm |
| December | -3.6 °C | 6.6 °C | 98.04 mm |
| Annual | 5 °C | 17.8 °C | 1227.07 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |