East Nassau, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.6 °F (low) to 58.1 °F (high). Annual precipitation averages 44.3 Inches. East Nassau 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.5 °F | 32.2 °F | 3.08 in. |
| February | 15.9 °F | 35.3 °F | 2.37 in. |
| March | 24.1 °F | 43.8 °F | 3.05 in. |
| April | 35.1 °F | 57.7 °F | 3.48 in. |
| May | 45.9 °F | 69.7 °F | 3.59 in. |
| June | 55.1 °F | 77.3 °F | 4.83 in. |
| July | 59.9 °F | 81.9 °F | 4.55 in. |
| August | 58.4 °F | 80.1 °F | 4.41 in. |
| September | 50.6 °F | 73.2 °F | 4.22 in. |
| October | 39.8 °F | 60.5 °F | 4.19 in. |
| November | 30.5 °F | 48.5 °F | 3.07 in. |
| December | 21.7 °F | 37.4 °F | 3.49 in. |
| Annual | 37.6 °F | 58.1 °F | 44.33 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |