| | Godfrey, IL | Alton, IL | United States |
| Rainfall | 40.9 | 41.7 | 38.1 |
| Snowfall | 14.3 | 15.5 | 27.8 |
| Precipitation Days | 97.6 | 104.2 | 106.2 |
| Sunny | 199 | 200 | 205 |
| Avg. July High | 88.3 | 88.7 | 85.8 |
| Avg. Jan. Low | 21.4 | 22.7 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.2 | 7 |
| UV Index | 4.1 | 4.1 | 4.3 |
| Elevation ft. | 610 | 495 | 2443 |