| | Old Lyme, CT | Syosset, NY | United States |
| Rainfall | 47.8 | 46.3 | 38.1 |
| Snowfall | 25.9 | 24.6 | 27.8 |
| Precipitation Days | 117.8 | 123.5 | 106.2 |
| Sunny | 194 | 170 | 205 |
| Avg. July High | 79.7 | 83.1 | 85.8 |
| Avg. Jan. Low | 22.6 | 24.5 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.2 | 7 |
| UV Index | 3.3 | 3.6 | 4.3 |
| Elevation ft. | 20 | 210 | 2443 |