| | Fort Washington, PA | Lower Merion, PA | United States |
| Rainfall | 48 | 48.4 | 38.1 |
| Snowfall | 20.3 | 17.8 | 27.8 |
| Precipitation Days | 105.4 | 113.6 | 106.2 |
| Sunny | 206 | 205 | 205 |
| Avg. July High | 86.3 | 87.1 | 85.8 |
| Avg. Jan. Low | 22.9 | 24.2 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
| UV Index | 4.1 | 4.1 | 4.3 |
| Elevation ft. | 230 | 289 | 2443 |