| | East Haddam, CT | Leonardtown, MD | United States |
| Rainfall | 51 | 45.5 | 38.1 |
| Snowfall | 35 | 14.3 | 27.8 |
| Precipitation Days | 114.7 | 115.9 | 106.2 |
| Sunny | 191 | 205 | 205 |
| Avg. July High | 82.3 | 87.8 | 85.8 |
| Avg. Jan. Low | 17.7 | 28.4 | 21.7 |
| Comfort Index (higher=better) | 7 | 7.4 | 7 |
| UV Index | 3.4 | 4 | 4.3 |
| Elevation ft. | 39 | 85 | 2443 |