| CLIMATE | Frederick | Chevy Chase (Montgomery county) | United States |
| Rainfall (in.) | 39.6 | 43.8 | 36.5 |
| Snowfall (in.) | 18.7 | 21.4 | 25 |
| Precipitation Days | 111 | 115 | 100 |
| Sunny Days | 200 | 200 | 205 |
| Avg. July High | 89 | 89 | 86.5 |
| Avg. Jan. Low | 25.1 | 24.3 | 20.5 |
| Comfort Index (higher=better) | 44 | 43 | 44 |
| UV Index | 4.2 | 4.1 | 4.3 |
| Elevation ft. | 340 | 326 | 1,443 |
