| | Pittsfield, IL | Sullivan, IL | United States |
| Rainfall | 39.9 | 40.6 | 38.1 |
| Snowfall | 17 | 12.3 | 27.8 |
| Precipitation Days | 103.4 | 101.3 | 106.2 |
| Sunny | 204 | 194 | 205 |
| Avg. July High | 86.5 | 85.8 | 85.8 |
| Avg. Jan. Low | 17.4 | 18.8 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 7.2 | 7 |
| UV Index | 3.9 | 4 | 4.3 |
| Elevation ft. | 732 | 673 | 2443 |