Lewisberry, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.5 °C (low) to 17.2 °C (high). Annual precipitation averages 1137.2 Millimeters. Lewisberry is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.2 °C | 3.6 °C | 80.01 mm |
| February | -4.7 °C | 5.1 °C | 66.55 mm |
| March | -0.4 °C | 10.1 °C | 97.79 mm |
| April | 5.3 °C | 17.1 °C | 89.15 mm |
| May | 10.9 °C | 22.5 °C | 102.36 mm |
| June | 16.2 °C | 27.3 °C | 103.63 mm |
| July | 18.6 °C | 30 °C | 110.74 mm |
| August | 17.6 °C | 28.9 °C | 98.55 mm |
| September | 13.6 °C | 25.1 °C | 118.62 mm |
| October | 7.3 °C | 18.3 °C | 102.36 mm |
| November | 1.7 °C | 12.1 °C | 79.25 mm |
| December | -2.5 °C | 6 °C | 88.14 mm |
| Annual | 6.5 °C | 17.2 °C | 1137.15 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |