South Nyack, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.4 °C (low) to 16.8 °C (high). Annual precipitation averages 1228.9 Millimeters. South Nyack is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.7 °C | 3.5 °C | 91.69 mm |
| February | -4.6 °C | 4.9 °C | 68.58 mm |
| March | -0.7 °C | 9.2 °C | 102.87 mm |
| April | 5.1 °C | 16.2 °C | 98.81 mm |
| May | 10.6 °C | 21.8 °C | 92.71 mm |
| June | 15.6 °C | 26.8 °C | 118.11 mm |
| July | 18.7 °C | 29.3 °C | 108.71 mm |
| August | 17.7 °C | 28.3 °C | 120.14 mm |
| September | 13.7 °C | 24.8 °C | 114.05 mm |
| October | 7.2 °C | 18 °C | 111.76 mm |
| November | 1.8 °C | 12.2 °C | 96.52 mm |
| December | -2.1 °C | 6.3 °C | 104.9 mm |
| Annual | 6.4 °C | 16.8 °C | 1228.85 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |