| Gaithersburg, MD | Loudon, TN | United States |
Rainfall | 42 | 53 | 38 |
Snowfall | 21 | 5 | 28 |
Precipitation | 113 | 122 | 106 |
Sunny | 202 | 204 | 205 |
Avg. July High | 85 | 89 | 86 |
Avg. Jan. Low | 25 | 28 | 22 |
Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
UV Index | 4.1 | 4.6 | 4.3 |
Elevation | 502 | 837 | 2443 |