North Amityville, New York has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.9 °C (low) to 16.5 °C (high). Annual precipitation averages 1164.3 Millimeters. North Amityville is located in USDA Plant Hardiness Zone 7b. 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 | -3.5 °C | 4.2 °C | 96.01 mm |
| February | -2.8 °C | 5.3 °C | 78.23 mm |
| March | 0.5 °C | 9 °C | 111.25 mm |
| April | 5.6 °C | 15 °C | 104.65 mm |
| May | 10.9 °C | 20.4 °C | 86.36 mm |
| June | 16.4 °C | 25.5 °C | 98.81 mm |
| July | 19.7 °C | 28.8 °C | 82.8 mm |
| August | 19.2 °C | 27.9 °C | 102.87 mm |
| September | 15.4 °C | 24.3 °C | 94.74 mm |
| October | 9.4 °C | 18.1 °C | 114.55 mm |
| November | 3.9 °C | 12.3 °C | 84.07 mm |
| December | -0.2 °C | 7.2 °C | 109.98 mm |
| Annual | 7.9 °C | 16.5 °C | 1164.32 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 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |