| | Westerly, RI | Chester, CT | United States |
| Rainfall | 48 | 50.4 | 38.1 |
| Snowfall | 27 | 30.3 | 27.8 |
| Precipitation Days | 120.2 | 114.3 | 106.2 |
| Sunny | 206 | 192 | 205 |
| Avg. July High | 79.6 | 84.4 | 85.8 |
| Avg. Jan. Low | 21.5 | 19.1 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 7.2 | 7 |
| UV Index | 3.6 | 3.4 | 4.3 |
| Elevation ft. | 36 | 16 | 2443 |