| 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. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 59g - Long Island Sound Coastal Lowland |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 11780 - Saint James, 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 | 46 | 37 | 28 | 44 |
| Avg Max Temp (°F) | 39 | 41 | 49 | 59 | 70 | 78 | 84 | 82 | 75 | 64 | 54 | 43 | 61 |
| Avg Precip (In.) | 4.2 | 3.21 | 4.43 | 4.24 | 3.99 | 3.86 | 3.43 | 4.16 | 3.71 | 3.79 | 4.01 | 4.08 | 47.13 |