| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 84a - Cape Cod and Islands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 11788 - Hauppauge, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 24 | 31 | 39 | 49 | 59 | 65 | 64 | 57 | 45 | 37 | 28 | 43 |
| Avg Max Temp (°F) | 38 | 40 | 49 | 59 | 69 | 78 | 83 | 82 | 75 | 64 | 53 | 43 | 61 |
| Avg Precip (In.) | 4.23 | 3.27 | 4.47 | 4.25 | 4 | 3.87 | 3.39 | 4.25 | 3.71 | 3.79 | 4.04 | 4.08 | 47.35 |