| | Madison, IL | Streamwood, IL | United States |
| Rainfall | 42.2 | 38 | 38.1 |
| Snowfall | 14.9 | 32.8 | 27.8 |
| Precipitation Days | 103.5 | 120.8 | 106.2 |
| Sunny | 202 | 186 | 205 |
| Avg. July High | 88.5 | 84.1 | 85.8 |
| Avg. Jan. Low | 22.6 | 12.3 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 6.8 | 7 |
| UV Index | 4.1 | 3.6 | 4.3 |
| Elevation ft. | 413 | 807 | 2443 |