Liberty, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2 °C (low) to 13.5 °C (high). Annual precipitation averages 1073.7 Millimeters. Liberty is located in USDA Plant Hardiness Zone 5b. 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 | -5.7 °C | 3.1 °C | 80.26 mm |
| February | -5.1 °C | 4.6 °C | 64.52 mm |
| March | -1.3 °C | 9.7 °C | 84.84 mm |
| April | 4.3 °C | 17.1 °C | 87.63 mm |
| May | 10.2 °C | 22.4 °C | 98.3 mm |
| June | 15 °C | 26.8 °C | 115.57 mm |
| July | 17.4 °C | 29 °C | 107.19 mm |
| August | 16.7 °C | 28.3 °C | 91.69 mm |
| September | 12.7 °C | 24.7 °C | 88.14 mm |
| October | 6.4 °C | 18 °C | 79.76 mm |
| November | 1.1 °C | 11.2 °C | 75.18 mm |
| December | -2.8 °C | 5.4 °C | 79.76 mm |
| Annual | 5.7 °C | 16.7 °C | 1052.84 mm |
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.9 °C | -0.5 °C | 74.42 mm |
| February | -9.4 °C | 1 °C | 57.4 mm |
| March | -5.6 °C | 5.7 °C | 82.04 mm |
| April | 0.3 °C | 13.4 °C | 93.22 mm |
| May | 6.4 °C | 19.8 °C | 93.98 mm |
| June | 11.4 °C | 24.1 °C | 102.62 mm |
| July | 13.8 °C | 26.4 °C | 104.9 mm |
| August | 12.9 °C | 25.6 °C | 96.77 mm |
| September | 9.1 °C | 21.8 °C | 112.78 mm |
| October | 3.2 °C | 15.1 °C | 99.31 mm |
| November | -1.6 °C | 7.9 °C | 78.99 mm |
| December | -6.1 °C | 2.2 °C | 77.22 mm |
| Annual | 2 °C | 13.5 °C | 1073.65 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |