| Joliet, IL | Romeoville, IL | United States |
Rainfall | 39 | 39.1 | 38.1 |
Snowfall | 27.7 | 30.1 | 27.8 |
Precipitation Days | 124.6 | 124.6 | 106.2 |
Sunny | 186 | 192 | 205 |
Avg. July High | 84.3 | 83.9 | 85.8 |
Avg. Jan. Low | 16 | 15.7 | 21.7 |
Comfort Index (higher=better) | 6.9 | 6.9 | 7 |
UV Index | 3.7 | 3.7 | 4.3 |
Elevation ft. | 541 | 620 | 2443 |