| | Chester, CT | Derby, CT | United States |
| Rainfall | 50.4 | 50 | 38.1 |
| Snowfall | 30.3 | 33.6 | 27.8 |
| Precipitation Days | 114.3 | 114.1 | 106.2 |
| Sunny | 192 | 205 | 205 |
| Avg. July High | 84.4 | 83.3 | 85.8 |
| Avg. Jan. Low | 19.1 | 20.4 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.1 | 7 |
| UV Index | 3.4 | 3.5 | 4.3 |
| Elevation ft. | 16 | 69 | 2443 |