| | Summit, IL | Niles, IL | United States |
| Rainfall | 39.1 | 36.1 | 38.1 |
| Snowfall | 31.9 | 36 | 27.8 |
| Precipitation Days | 124.3 | 125.3 | 106.2 |
| Sunny | 189 | 190 | 205 |
| Avg. July High | 84.1 | 83.6 | 85.8 |
| Avg. Jan. Low | 19.6 | 16.9 | 21.7 |
| Comfort Index (higher=better) | 7 | 6.9 | 7 |
| UV Index | 3.6 | 3.6 | 4.3 |
| Elevation ft. | 614 | 636 | 2443 |