| Rockville, MD | Gettysburg, PA | United States |
Rainfall | 42 | 43 | 38 |
Snowfall | 18 | 25 | 28 |
Precipitation | 112 | 119 | 106 |
Sunny | 203 | 195 | 205 |
Avg. July High | 85 | 86 | 86 |
Avg. Jan. Low | 25 | 21 | 22 |
Comfort Index (higher=better) | 7.4 | 7.2 | 7 |
UV Index | 4.1 | 4.2 | 4.3 |
Elevation | 456 | 535 | 2443 |