Penns Creek, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 16.4 °C (high). Annual precipitation averages 1176.8 Millimeters. Penns Creek 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 | -7.1 °C | 2.2 °C | 81.79 mm |
| February | -6.4 °C | 4 °C | 62.23 mm |
| March | -2.3 °C | 9.2 °C | 90.68 mm |
| April | 3.3 °C | 16.7 °C | 97.28 mm |
| May | 9.1 °C | 22.4 °C | 106.43 mm |
| June | 14.3 °C | 26.9 °C | 111.25 mm |
| July | 16.6 °C | 29.3 °C | 108.2 mm |
| August | 15.7 °C | 28.3 °C | 114.3 mm |
| September | 11.7 °C | 24.4 °C | 123.44 mm |
| October | 5.4 °C | 17.7 °C | 107.19 mm |
| November | 0 °C | 10.9 °C | 81.53 mm |
| December | -3.9 °C | 4.7 °C | 92.46 mm |
| Annual | 4.7 °C | 16.4 °C | 1176.78 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 |