Nettie, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.1 °C (low) to 15.9 °C (high). Annual precipitation averages 1428.8 Millimeters. Nettie is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.9 °C | 3.8 °C | 106.17 mm |
| February | -5.7 °C | 5.3 °C | 98.3 mm |
| March | -2 °C | 10.2 °C | 124.97 mm |
| April | 3.2 °C | 16.6 °C | 116.84 mm |
| May | 8.3 °C | 21.1 °C | 145.29 mm |
| June | 12.9 °C | 24.6 °C | 140.21 mm |
| July | 15.1 °C | 26.3 °C | 165.1 mm |
| August | 14.2 °C | 25.8 °C | 126.49 mm |
| September | 10.8 °C | 23.1 °C | 105.92 mm |
| October | 4.7 °C | 17.3 °C | 94.49 mm |
| November | -1.1 °C | 11.1 °C | 89.41 mm |
| December | -4.4 °C | 5.5 °C | 115.57 mm |
| Annual | 4.1 °C | 15.9 °C | 1428.76 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |