| Mount Airy, MD | Perry Hall, MD | United States |
Rainfall | 44 | 44 | 38 |
Snowfall | 26 | 20 | 28 |
Precipitation | 115 | 118 | 106 |
Sunny | 194 | 216 | 205 |
Avg. July High | 85 | 88 | 86 |
Avg. Jan. Low | 23 | 26 | 22 |
Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
UV Index | 4.2 | 4.1 | 4.3 |
Elevation | 774 | 253 | 2443 |