Heckscherville, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.2 °C (low) to 15.4 °C (high). Annual precipitation averages 1320.3 Millimeters. Heckscherville 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 | -7.7 °C | 1.7 °C | 93.22 mm |
| February | -6.9 °C | 3 °C | 72.14 mm |
| March | -2.6 °C | 7.9 °C | 104.65 mm |
| April | 3.2 °C | 15.2 °C | 108.2 mm |
| May | 8.6 °C | 21 °C | 107.95 mm |
| June | 13.6 °C | 25.5 °C | 129.79 mm |
| July | 15.8 °C | 28.3 °C | 125.98 mm |
| August | 14.9 °C | 27.3 °C | 114.55 mm |
| September | 11 °C | 23.5 °C | 135.64 mm |
| October | 4.8 °C | 16.9 °C | 127.25 mm |
| November | -0.2 °C | 10 °C | 95.76 mm |
| December | -4.4 °C | 4.4 °C | 105.16 mm |
| Annual | 4.2 °C | 15.4 °C | 1320.29 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |