| | Darien, IL | Manteno, IL | United States |
| Rainfall | 39 | 39.3 | 38.1 |
| Snowfall | 29.8 | 25.7 | 27.8 |
| Precipitation Days | 120.3 | 112.9 | 106.2 |
| Sunny | 187 | 185 | 205 |
| Avg. July High | 83.8 | 84.1 | 85.8 |
| Avg. Jan. Low | 15 | 15.6 | 21.7 |
| Comfort Index (higher=better) | 6.9 | 7 | 7 |
| UV Index | 3.4 | 3.5 | 4.3 |
| Elevation ft. | 758 | 689 | 2443 |