Force, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.8 °C (low) to 14.9 °C (high). Annual precipitation averages 1073.9 Millimeters. Force is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.7 °C | 0.8 °C | 87.63 mm |
| February | -8.4 °C | 2.5 °C | 67.06 mm |
| March | -4.4 °C | 7.4 °C | 83.82 mm |
| April | 1.2 °C | 15.2 °C | 93.22 mm |
| May | 7.1 °C | 21.3 °C | 103.38 mm |
| June | 11.9 °C | 25.3 °C | 101.09 mm |
| July | 14.3 °C | 27.5 °C | 96.01 mm |
| August | 13.7 °C | 26.7 °C | 87.38 mm |
| September | 9.8 °C | 23 °C | 99.31 mm |
| October | 3.6 °C | 16.3 °C | 87.88 mm |
| November | -1.4 °C | 9.3 °C | 82.3 mm |
| December | -5.3 °C | 3.2 °C | 84.84 mm |
| Annual | 2.8 °C | 14.9 °C | 1073.92 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |