| Bolingbrook, IL | Columbia, MD | United States |
Rainfall | 39 | 45 | 38 |
Snowfall | 30 | 17 | 28 |
Precipitation | 122 | 114 | 106 |
Sunny | 187 | 212 | 205 |
Avg. July High | 84 | 88 | 86 |
Avg. Jan. Low | 15 | 24 | 22 |
Comfort Index (higher=better) | 6.9 | 7.3 | 7 |
UV Index | 3.7 | 3.9 | 4.3 |
Elevation | 702 | 404 | 2443 |