| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Nov. 21 - Nov. 30 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 59g - Long Island Sound Coastal Lowland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 11550 - Hempstead, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 26 | 33 | 41 | 51 | 60 | 66 | 65 | 58 | 47 | 39 | 30 | 45 |
| Avg Max Temp (°F) | 38 | 40 | 49 | 59 | 69 | 78 | 83 | 81 | 74 | 63 | 53 | 43 | 61 |
| Avg Precip (In.) | 3.94 | 2.98 | 4.24 | 4.21 | 4.23 | 3.68 | 3.92 | 3.78 | 3.93 | 3.52 | 3.92 | 3.73 | 46.09 |