| | Mount Zion, IL | Clinton, IL | United States |
| Rainfall | 40 | 40.2 | 38.1 |
| Snowfall | 11.8 | 17.8 | 27.8 |
| Precipitation Days | 100.7 | 103.6 | 106.2 |
| Sunny | 201 | 196 | 205 |
| Avg. July High | 86.9 | 85.4 | 85.8 |
| Avg. Jan. Low | 18.7 | 17.6 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.1 | 7 |
| UV Index | 3.9 | 3.9 | 4.3 |
| Elevation ft. | 692 | 735 | 2443 |