Woolrich, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.8 °C (low) to 16 °C (high). Annual precipitation averages 1101.1 Millimeters. Woolrich is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.8 °C | 1.6 °C | 84.07 mm |
| February | -7.3 °C | 3.5 °C | 57.4 mm |
| March | -3.2 °C | 8.7 °C | 84.58 mm |
| April | 2.3 °C | 16.3 °C | 92.46 mm |
| May | 8.2 °C | 22.4 °C | 101.6 mm |
| June | 13.2 °C | 26.7 °C | 100.84 mm |
| July | 15.6 °C | 29.2 °C | 111.51 mm |
| August | 14.7 °C | 28 °C | 101.35 mm |
| September | 10.7 °C | 24 °C | 110.24 mm |
| October | 4.5 °C | 17.3 °C | 97.54 mm |
| November | -0.8 °C | 10.3 °C | 82.8 mm |
| December | -4.6 °C | 4.1 °C | 76.71 mm |
| Annual | 3.8 °C | 16 °C | 1101.1 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |