| | Carol Stream, IL | Highland, IL | United States |
| Rainfall | 37.9 | 42.7 | 38.1 |
| Snowfall | 30.5 | 11.6 | 27.8 |
| Precipitation Days | 119 | 88.7 | 106.2 |
| Sunny | 187 | 200 | 205 |
| Avg. July High | 85.3 | 88.6 | 85.8 |
| Avg. Jan. Low | 13.6 | 21.3 | 21.7 |
| Comfort Index (higher=better) | 6.8 | 7.2 | 7 |
| UV Index | 3.4 | 4.1 | 4.3 |
| Elevation ft. | 758 | 528 | 2443 |