Piermont, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.7 °C (low) to 16.9 °C (high). Annual precipitation averages 1228.1 Millimeters. Piermont is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.3 °C | 3.7 °C | 91.44 mm |
| February | -4.3 °C | 5.2 °C | 69.85 mm |
| March | -0.4 °C | 9.4 °C | 102.36 mm |
| April | 5.3 °C | 16.2 °C | 99.06 mm |
| May | 10.8 °C | 21.9 °C | 94.23 mm |
| June | 15.9 °C | 26.9 °C | 118.87 mm |
| July | 18.9 °C | 29.5 °C | 107.44 mm |
| August | 18 °C | 28.4 °C | 119.13 mm |
| September | 13.9 °C | 24.8 °C | 114.3 mm |
| October | 7.5 °C | 18.1 °C | 109.73 mm |
| November | 2.1 °C | 12.2 °C | 94.74 mm |
| December | -1.8 °C | 6.3 °C | 106.93 mm |
| Annual | 6.7 °C | 16.9 °C | 1228.08 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |