| | Darien, CT | Deerfield, IL | United States |
| Rainfall | 50.8 | 36.3 | 38.1 |
| Snowfall | 29.9 | 35.9 | 27.8 |
| Precipitation Days | 123.7 | 125.3 | 106.2 |
| Sunny | 175 | 192 | 205 |
| Avg. July High | 83.6 | 83.1 | 85.8 |
| Avg. Jan. Low | 21.1 | 16.7 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 6.9 | 7 |
| UV Index | 3.4 | 3.7 | 4.3 |
| Elevation ft. | 49 | 686 | 2443 |