| | Romeoville, IL | Shorewood, IL | United States |
| Rainfall | 39.1 | 39 | 38.1 |
| Snowfall | 30.1 | 27.3 | 27.8 |
| Precipitation Days | 124.6 | 124.5 | 106.2 |
| Sunny | 192 | 187 | 205 |
| Avg. July High | 83.9 | 84.2 | 85.8 |
| Avg. Jan. Low | 15.7 | 16 | 21.7 |
| Comfort Index (higher=better) | 6.9 | 6.9 | 7 |
| UV Index | 3.7 | 3.7 | 4.3 |
| Elevation ft. | 620 | 577 | 2443 |