| | Marengo, IL | Lombard, IL | United States |
| Rainfall | 36.5 | 38.7 | 38.1 |
| Snowfall | 33.8 | 31.2 | 27.8 |
| Precipitation Days | 111.8 | 120.5 | 106.2 |
| Sunny | 191 | 189 | 205 |
| Avg. July High | 83.1 | 83.9 | 85.8 |
| Avg. Jan. Low | 12.3 | 15.3 | 21.7 |
| Comfort Index (higher=better) | 6.8 | 6.9 | 7 |
| UV Index | 3.4 | 3.4 | 4.3 |
| Elevation ft. | 833 | 718 | 2443 |