Lynbrook, New York has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47 °F (low) to 62.2 °F (high). Annual precipitation averages 48.9 Inches. Lynbrook is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.4 °F | 40.0 °F | 3.79 in. |
| February | 27.6 °F | 42.0 °F | 2.95 in. |
| March | 33.6 °F | 48.6 °F | 4.56 in. |
| April | 43.0 °F | 59.6 °F | 4.07 in. |
| May | 52.4 °F | 69.2 °F | 3.99 in. |
| June | 62.2 °F | 78.4 °F | 4.42 in. |
| July | 68.2 °F | 84.2 °F | 4.24 in. |
| August | 67.2 °F | 82.8 °F | 4.44 in. |
| September | 60.6 °F | 76.6 °F | 3.96 in. |
| October | 49.8 °F | 65.3 °F | 4.73 in. |
| November | 40.1 °F | 54.6 °F | 3.43 in. |
| December | 32.4 °F | 45.3 °F | 4.27 in. |
| Annual | 47 °F | 62.2 °F | 48.85 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |