West Hampton Dunes, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 6.9 °C (low) to 15.7 °C (high). Annual precipitation averages 1170.7 Millimeters. West Hampton Dunes 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.4 °C | 3.8 °C | 95.5 mm |
| February | -3.9 °C | 4.7 °C | 84.33 mm |
| March | -0.6 °C | 8.2 °C | 117.6 mm |
| April | 4.4 °C | 13.8 °C | 104.39 mm |
| May | 9.7 °C | 19.2 °C | 86.87 mm |
| June | 15.2 °C | 24.3 °C | 94.23 mm |
| July | 18.7 °C | 27.5 °C | 75.44 mm |
| August | 18.1 °C | 27 °C | 94.23 mm |
| September | 14.6 °C | 23.6 °C | 94.23 mm |
| October | 8.5 °C | 17.5 °C | 115.32 mm |
| November | 3.2 °C | 11.9 °C | 93.98 mm |
| December | -1.2 °C | 6.8 °C | 114.55 mm |
| Annual | 6.9 °C | 15.7 °C | 1170.67 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 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 | Dfb - Humid Continental Mild Summer, Wet All Year |