Prattsville, 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 14 °C (high). Annual precipitation averages 1055.4 Millimeters. Prattsville 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 | -10.5 °C | 0 °C | 74.68 mm |
| February | -9.3 °C | 1.8 °C | 57.4 mm |
| March | -5.6 °C | 6 °C | 85.85 mm |
| April | 0.4 °C | 13.6 °C | 83.82 mm |
| May | 6.3 °C | 20.1 °C | 91.44 mm |
| June | 11.6 °C | 24.4 °C | 103.12 mm |
| July | 14.1 °C | 26.7 °C | 96.52 mm |
| August | 13.2 °C | 26 °C | 100.58 mm |
| September | 9.2 °C | 22.3 °C | 101.35 mm |
| October | 3.1 °C | 15.4 °C | 104.39 mm |
| November | -1.8 °C | 8.6 °C | 74.42 mm |
| December | -6.1 °C | 2.7 °C | 81.79 mm |
| Annual | 2.1 °C | 14 °C | 1055.36 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 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |