| | Oak Lawn, IL | Irondale, AL | United States |
| Rainfall | 39.1 | 55 | 38.1 |
| Snowfall | 31.8 | 1.2 | 27.8 |
| Precipitation Days | 124.4 | 106.1 | 106.2 |
| Sunny | 189 | 207 | 205 |
| Avg. July High | 84.1 | 90.3 | 85.8 |
| Avg. Jan. Low | 19.6 | 32 | 21.7 |
| Comfort Index (higher=better) | 7 | 7.3 | 7 |
| UV Index | 3.6 | 5.2 | 4.3 |
| Elevation ft. | 597 | 741 | 2443 |