Bernville, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 17 °C (high). Annual precipitation averages 1223.8 Millimeters. Bernville is located in USDA Plant Hardiness Zone 7a. 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 | -5.8 °C | 3.3 °C | 85.6 mm |
| February | -5.1 °C | 4.8 °C | 67.31 mm |
| March | -0.9 °C | 9.7 °C | 97.79 mm |
| April | 4.7 °C | 16.8 °C | 95.5 mm |
| May | 10.3 °C | 22.2 °C | 98.3 mm |
| June | 15.6 °C | 27.2 °C | 127 mm |
| July | 18.1 °C | 29.8 °C | 124.21 mm |
| August | 17.1 °C | 28.7 °C | 111.25 mm |
| September | 13.1 °C | 25.1 °C | 124.97 mm |
| October | 6.6 °C | 18.4 °C | 107.44 mm |
| November | 1.3 °C | 11.8 °C | 86.36 mm |
| December | -2.8 °C | 6.1 °C | 98.04 mm |
| Annual | 6 °C | 17 °C | 1223.77 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |