Newell, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.6 °C (low) to 16.5 °C (high). Annual precipitation averages 1049.3 Millimeters. Newell is located in USDA Plant Hardiness Zone 7a. 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 °C | 2.7 °C | 80.77 mm |
| February | -5.3 °C | 4.4 °C | 61.47 mm |
| March | -1.4 °C | 9.5 °C | 84.33 mm |
| April | 4.1 °C | 17.1 °C | 94.23 mm |
| May | 9.8 °C | 22.3 °C | 99.31 mm |
| June | 14.7 °C | 26.8 °C | 110.49 mm |
| July | 17.2 °C | 28.8 °C | 107.7 mm |
| August | 16.4 °C | 28.1 °C | 90.17 mm |
| September | 12.7 °C | 24.7 °C | 91.44 mm |
| October | 6.5 °C | 17.9 °C | 76.96 mm |
| November | 1.1 °C | 11 °C | 73.41 mm |
| December | -2.9 °C | 5.2 °C | 78.99 mm |
| Annual | 5.6 °C | 16.5 °C | 1049.27 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 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |