| | Troy, IL | Lemont, IL | United States |
| Rainfall | 43.7 | 39.4 | 38.1 |
| Snowfall | 11.6 | 29.9 | 27.8 |
| Precipitation Days | 96.6 | 120.7 | 106.2 |
| Sunny | 204 | 187 | 205 |
| Avg. July High | 89.3 | 83.9 | 85.8 |
| Avg. Jan. Low | 22.1 | 15.1 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 6.9 | 7 |
| UV Index | 4.1 | 3.6 | 4.3 |
| Elevation ft. | 561 | 607 | 2443 |