| | Fairfield, IA | Hawthorn Woods, IL | United States |
| Rainfall | 38 | 37.5 | 38.1 |
| Snowfall | 25.7 | 37.8 | 27.8 |
| Precipitation Days | 99.6 | 124.2 | 106.2 |
| Sunny | 199 | 193 | 205 |
| Avg. July High | 87 | 83.4 | 85.8 |
| Avg. Jan. Low | 15.5 | 12.3 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 6.7 | 7 |
| UV Index | 3.8 | 3.7 | 4.3 |
| Elevation ft. | 778 | 801 | 2443 |