Liberty, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.1 °C (low) to 12.9 °C (high). Annual precipitation averages 1352.1 Millimeters. Liberty is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.3 °C | -1.1 °C | 96.52 mm |
| February | -10 °C | 0.6 °C | 70.61 mm |
| March | -5.4 °C | 5.3 °C | 93.98 mm |
| April | 0.7 °C | 12.3 °C | 110.49 mm |
| May | 6.6 °C | 18.6 °C | 118.11 mm |
| June | 11.7 °C | 23.1 °C | 141.99 mm |
| July | 14.1 °C | 25.9 °C | 138.68 mm |
| August | 13.4 °C | 24.8 °C | 125.73 mm |
| September | 9.6 °C | 21.1 °C | 125.48 mm |
| October | 3.5 °C | 14.4 °C | 123.7 mm |
| November | -1.8 °C | 7.8 °C | 92.71 mm |
| December | -6.6 °C | 1.7 °C | 114.05 mm |
| Annual | 2.1 °C | 12.9 °C | 1352.05 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |