| | Plymouth, MA | Deep River, CT | United States |
| Rainfall | 50.6 | 49.1 | 38.1 |
| Snowfall | 36.3 | 30 | 27.8 |
| Precipitation Days | 129.3 | 117.4 | 106.2 |
| Sunny | 201 | 196 | 205 |
| Avg. July High | 81.3 | 82.7 | 85.8 |
| Avg. Jan. Low | 18.9 | 20.1 | 21.7 |
| Comfort Index (higher=better) | 7 | 7.2 | 7 |
| UV Index | 3.3 | 3.4 | 4.3 |
| Elevation ft. | 49 | 52 | 2443 |