Nemacolin, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.7 °C (low) to 17.2 °C (high). Annual precipitation averages 1099.1 Millimeters. Nemacolin 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.6 °C | 3.8 °C | 82.55 mm |
| February | -4.8 °C | 5.6 °C | 71.88 mm |
| March | -1.1 °C | 10.7 °C | 89.41 mm |
| April | 4.3 °C | 17.8 °C | 92.71 mm |
| May | 10.1 °C | 22.9 °C | 108.97 mm |
| June | 14.8 °C | 27 °C | 111.51 mm |
| July | 17.2 °C | 28.9 °C | 116.59 mm |
| August | 16.4 °C | 28.4 °C | 96.01 mm |
| September | 12.6 °C | 25.1 °C | 88.65 mm |
| October | 6.2 °C | 18.3 °C | 77.22 mm |
| November | 0.8 °C | 11.8 °C | 79.5 mm |
| December | -2.8 °C | 6.1 °C | 84.07 mm |
| Annual | 5.7 °C | 17.2 °C | 1099.07 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |