Prattsburgh, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.4 °C (low) to 12.9 °C (high). Annual precipitation averages 989.8 Millimeters. Prattsburgh is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.6 °C | -1.2 °C | 62.99 mm |
| February | -10.3 °C | 0.1 °C | 44.7 mm |
| March | -6.6 °C | 4.4 °C | 68.07 mm |
| April | -0.7 °C | 12.1 °C | 79.25 mm |
| May | 5.5 °C | 19.1 °C | 93.73 mm |
| June | 10.8 °C | 23.6 °C | 107.7 mm |
| July | 13.3 °C | 25.9 °C | 104.65 mm |
| August | 12.6 °C | 25.1 °C | 91.69 mm |
| September | 8.8 °C | 21.6 °C | 98.3 mm |
| October | 3.1 °C | 14.7 °C | 101.85 mm |
| November | -2.2 °C | 7.4 °C | 71.37 mm |
| December | -6.8 °C | 1.7 °C | 65.53 mm |
| Annual | 1.4 °C | 12.9 °C | 989.83 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |