| Oak Forest, IL | Grayslake, IL | United States |
Rainfall | 39 | 36 | 38 |
Snowfall | 31 | 43 | 28 |
Precipitation | 123 | 120 | 106 |
Sunny | 188 | 192 | 205 |
Avg. July High | 84 | 82 | 86 |
Avg. Jan. Low | 18 | 14 | 22 |
Comfort Index (higher=better) | 7 | 6.8 | 7 |
UV Index | 3.6 | 3.7 | 4.3 |
Elevation | 673 | 787 | 2443 |