| | Round Lake Beach, IL | Deerfield, IL | United States |
| Rainfall | 36.7 | 36.3 | 38.1 |
| Snowfall | 43.2 | 35.9 | 27.8 |
| Precipitation Days | 121 | 125.3 | 106.2 |
| Sunny | 188 | 192 | 205 |
| Avg. July High | 82.2 | 83.1 | 85.8 |
| Avg. Jan. Low | 13.9 | 16.7 | 21.7 |
| Comfort Index (higher=better) | 6.7 | 6.9 | 7 |
| UV Index | 3.7 | 3.7 | 4.3 |
| Elevation ft. | 768 | 686 | 2443 |