Deer Park, New York has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.6 °F (low) to 61.8 °F (high). Annual precipitation averages 47.3 Inches. Deer Park 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 | 25.1 °F | 39.6 °F | 3.81 in. |
| February | 26.3 °F | 41.8 °F | 3.24 in. |
| March | 32.4 °F | 48.5 °F | 4.57 in. |
| April | 41.5 °F | 59.7 °F | 4.19 in. |
| May | 51.1 °F | 69.4 °F | 3.46 in. |
| June | 61.0 °F | 78.2 °F | 3.95 in. |
| July | 67.1 °F | 83.7 °F | 3.25 in. |
| August | 66.0 °F | 82.0 °F | 4.12 in. |
| September | 59.3 °F | 75.4 °F | 3.84 in. |
| October | 48.1 °F | 64.1 °F | 4.7 in. |
| November | 38.3 °F | 54.0 °F | 3.57 in. |
| December | 31.0 °F | 45.0 °F | 4.63 in. |
| Annual | 45.6 °F | 61.8 °F | 47.33 in. |
| 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 : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |