| | Thebes, IL | Cairo, IL | United States |
| Rainfall | 48.3 | 47.7 | 38.1 |
| Snowfall | 8.2 | 6.9 | 27.8 |
| Precipitation Days | 110.2 | 103.4 | 106.2 |
| Sunny | 221 | 218 | 205 |
| Avg. July High | 89.4 | 89.2 | 85.8 |
| Avg. Jan. Low | 24.2 | 25.5 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 7.2 | 7 |
| UV Index | 4.1 | 4.1 | 4.3 |
| Elevation ft. | 341 | 312 | 2443 |