Liverpool, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.2 °C (low) to 16.6 °C (high). Annual precipitation averages 1164.1 Millimeters. Liverpool 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.5 °C | 2.6 °C | 80.01 mm |
| February | -5.9 °C | 4.3 °C | 65.28 mm |
| March | -1.7 °C | 9.4 °C | 93.73 mm |
| April | 3.9 °C | 16.8 °C | 96.01 mm |
| May | 9.7 °C | 22.3 °C | 105.41 mm |
| June | 14.8 °C | 26.9 °C | 106.43 mm |
| July | 17.1 °C | 29.4 °C | 111.51 mm |
| August | 16.2 °C | 28.4 °C | 107.19 mm |
| September | 12.2 °C | 24.6 °C | 120.65 mm |
| October | 5.9 °C | 17.8 °C | 105.41 mm |
| November | 0.4 °C | 11.3 °C | 81.79 mm |
| December | -3.6 °C | 5.2 °C | 90.68 mm |
| Annual | 5.2 °C | 16.6 °C | 1164.1 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |