| Sterling, VA | Chicago, IL | United States |
Rainfall | 42 | 38.2 | 38.1 |
Snowfall | 21.5 | 35.1 | 27.8 |
Precipitation Days | 116.2 | 124.8 | 106.2 |
Sunny | 197 | 189 | 205 |
Avg. July High | 85.8 | 83.9 | 85.8 |
Avg. Jan. Low | 23.5 | 19.2 | 21.7 |
Comfort Index (higher=better) | 7.3 | 7 | 7 |
UV Index | 4 | 3.6 | 4.3 |
Elevation ft. | 292 | 587 | 2443 |