Marlinton, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.3 °C (low) to 16.3 °C (high). Annual precipitation averages 1157.7 Millimeters. Marlinton is located in USDA Plant Hardiness Zone 6a. 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 | -7.6 °C | 3.4 °C | 92.46 mm |
| February | -6.3 °C | 5.7 °C | 81.28 mm |
| March | -2.8 °C | 10.3 °C | 103.63 mm |
| April | 2 °C | 17.3 °C | 102.11 mm |
| May | 7.6 °C | 21.9 °C | 123.7 mm |
| June | 12.2 °C | 25.5 °C | 99.06 mm |
| July | 14.4 °C | 27.4 °C | 105.92 mm |
| August | 13.9 °C | 26.8 °C | 100.33 mm |
| September | 10.4 °C | 23.7 °C | 92.96 mm |
| October | 3.6 °C | 17.7 °C | 73.41 mm |
| November | -2.1 °C | 10.8 °C | 79.76 mm |
| December | -5.3 °C | 5.4 °C | 103.12 mm |
| Annual | 3.3 °C | 16.3 °C | 1157.74 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |