| | Mount Rainier, MD | Wheaton, MD | United States |
| Rainfall | 43.1 | 43 | 38.1 |
| Snowfall | 13.6 | 14.9 | 27.8 |
| Precipitation Days | 111.9 | 109.9 | 106.2 |
| Sunny | 207 | 201 | 205 |
| Avg. July High | 88.7 | 87 | 85.8 |
| Avg. Jan. Low | 25.6 | 25.2 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
| UV Index | 4.3 | 4.1 | 4.3 |
| Elevation ft. | 82 | 466 | 2443 |