Coalport, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.5 °C (low) to 15 °C (high). Annual precipitation averages 1065.5 Millimeters. Coalport is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8 °C | 0.9 °C | 72.14 mm |
| February | -7.4 °C | 2.7 °C | 51.56 mm |
| March | -3.6 °C | 7.7 °C | 83.57 mm |
| April | 2.3 °C | 15.3 °C | 91.69 mm |
| May | 7.7 °C | 21.1 °C | 93.47 mm |
| June | 12.9 °C | 25.4 °C | 108.97 mm |
| July | 15.2 °C | 27.6 °C | 107.95 mm |
| August | 14.1 °C | 26.9 °C | 105.66 mm |
| September | 10.4 °C | 23.2 °C | 102.62 mm |
| October | 4 °C | 16.4 °C | 90.17 mm |
| November | -0.9 °C | 9.3 °C | 79.76 mm |
| December | -4.7 °C | 3.4 °C | 77.98 mm |
| Annual | 3.5 °C | 15 °C | 1065.54 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |