| | Effingham, IL | Centralia, IL | United States |
| Rainfall | 42.4 | 43.6 | 38.1 |
| Snowfall | 15.7 | 10.1 | 27.8 |
| Precipitation Days | 108.1 | 103.4 | 106.2 |
| Sunny | 196 | 204 | 205 |
| Avg. July High | 87.2 | 87.6 | 85.8 |
| Avg. Jan. Low | 19.7 | 20.3 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 7.2 | 7 |
| UV Index | 4 | 4.3 | 4.3 |
| Elevation ft. | 597 | 492 | 2443 |