Wynantskill, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.4 °C (low) to 14.4 °C (high). Annual precipitation averages 1101.6 Millimeters. Wynantskill 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.7 °C | -0.1 °C | 74.17 mm |
| February | -8.9 °C | 1.4 °C | 58.42 mm |
| March | -4.3 °C | 6.3 °C | 76.2 mm |
| April | 1.9 °C | 14.2 °C | 84.58 mm |
| May | 8.2 °C | 20.7 °C | 91.44 mm |
| June | 13.3 °C | 25.2 °C | 117.86 mm |
| July | 15.7 °C | 27.9 °C | 119.38 mm |
| August | 15.1 °C | 26.8 °C | 107.19 mm |
| September | 10.7 °C | 22.8 °C | 100.58 mm |
| October | 4.6 °C | 15.8 °C | 107.95 mm |
| November | -0.7 °C | 9 °C | 77.47 mm |
| December | -5.7 °C | 2.7 °C | 86.36 mm |
| Annual | 3.4 °C | 14.4 °C | 1101.6 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |