| | Salem, IL | LaSalle, IL | United States |
| Rainfall | 43.6 | 36.9 | 38.1 |
| Snowfall | 11.5 | 22.1 | 27.8 |
| Precipitation Days | 101.5 | 115.1 | 106.2 |
| Sunny | 204 | 191 | 205 |
| Avg. July High | 87.5 | 85.1 | 85.8 |
| Avg. Jan. Low | 20.4 | 14.2 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7 | 7 |
| UV Index | 4.3 | 3.8 | 4.3 |
| Elevation ft. | 541 | 571 | 2443 |