| Frederick, MD | St. Charles, IL | United States |
Rainfall | 43 | 38 | 38 |
Snowfall | 23 | 30 | 28 |
Precipitation | 107 | 120 | 106 |
Sunny | 200 | 189 | 205 |
Avg. July High | 88 | 85 | 86 |
Avg. Jan. Low | 23 | 15 | 22 |
Comfort Index (higher=better) | 7.3 | 6.9 | 7 |
UV Index | 4.2 | 3.5 | 4.3 |
Elevation | 282 | 732 | 2443 |