| | Mendota, IL | Princeton, IL | United States |
| Rainfall | 37.2 | 37.4 | 38.1 |
| Snowfall | 28.7 | 24.9 | 27.8 |
| Precipitation Days | 109.8 | 92.8 | 106.2 |
| Sunny | 195 | 194 | 205 |
| Avg. July High | 83.2 | 85.1 | 85.8 |
| Avg. Jan. Low | 12.4 | 14.1 | 21.7 |
| Comfort Index (higher=better) | 6.9 | 7 | 7 |
| UV Index | 3.8 | 3.7 | 4.3 |
| Elevation ft. | 741 | 718 | 2443 |