Ridgway, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.1 °C (low) to 13.8 °C (high). Annual precipitation averages 1163.6 Millimeters. Ridgway 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 | -9.4 °C | -0.2 °C | 88.39 mm |
| February | -9.1 °C | 1.4 °C | 66.8 mm |
| March | -5.2 °C | 6.4 °C | 85.09 mm |
| April | 0.6 °C | 14.1 °C | 101.85 mm |
| May | 6.3 °C | 20.3 °C | 105.92 mm |
| June | 11.1 °C | 24.2 °C | 115.06 mm |
| July | 13.4 °C | 26.3 °C | 116.33 mm |
| August | 12.7 °C | 25.6 °C | 101.6 mm |
| September | 9.1 °C | 22 °C | 103.12 mm |
| October | 3.3 °C | 15.3 °C | 97.28 mm |
| November | -1.7 °C | 8.3 °C | 92.2 mm |
| December | -5.7 °C | 2.3 °C | 89.92 mm |
| Annual | 2.1 °C | 13.8 °C | 1163.56 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |