West Hempstead, New York has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.3 °F (low) to 62.5 °F (high). Annual precipitation averages 48.9 Inches. West Hempstead 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.0 °F | 39.9 °F | 3.79 in. |
| February | 27.2 °F | 42.2 °F | 3.05 in. |
| March | 33.1 °F | 49.0 °F | 4.42 in. |
| April | 42.4 °F | 60.2 °F | 4.03 in. |
| May | 51.9 °F | 69.9 °F | 3.97 in. |
| June | 61.5 °F | 79.0 °F | 4.43 in. |
| July | 67.5 °F | 84.6 °F | 4.31 in. |
| August | 66.4 °F | 83.1 °F | 4.48 in. |
| September | 59.8 °F | 76.6 °F | 4.07 in. |
| October | 48.9 °F | 65.5 °F | 4.7 in. |
| November | 39.3 °F | 54.6 °F | 3.37 in. |
| December | 31.8 °F | 45.2 °F | 4.32 in. |
| Annual | 46.3 °F | 62.5 °F | 48.94 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |