Coudersport, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.5 °C (low) to 13.5 °C (high). Annual precipitation averages 1132.8 Millimeters. Coudersport is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.1 °C | -0.5 °C | 81.28 mm |
| February | -9.5 °C | 1 °C | 57.66 mm |
| March | -6 °C | 5.9 °C | 84.07 mm |
| April | -0.3 °C | 13.5 °C | 93.73 mm |
| May | 5.6 °C | 20.1 °C | 99.82 mm |
| June | 10.4 °C | 24.1 °C | 106.43 mm |
| July | 12.7 °C | 26.2 °C | 120.4 mm |
| August | 12.2 °C | 25.3 °C | 106.93 mm |
| September | 8.4 °C | 21.8 °C | 105.41 mm |
| October | 2.6 °C | 15.1 °C | 103.38 mm |
| November | -2.1 °C | 8 °C | 89.66 mm |
| December | -6.4 °C | 2 °C | 84.07 mm |
| Annual | 1.5 °C | 13.5 °C | 1132.84 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |