| 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 11784 - Selden, NY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 24 | 31 | 39 | 49 | 58 | 64 | 63 | 56 | 45 | 37 | 28 | 43 |
| Avg Max Temp (°F) | 39 | 41 | 49 | 60 | 70 | 79 | 84 | 82 | 75 | 64 | 54 | 43 | 62 |
| Avg Precip (In.) | 4.28 | 3.35 | 4.43 | 4.28 | 4 | 3.98 | 3.4 | 4.26 | 3.77 | 3.84 | 4.12 | 4.19 | 47.89 |