| | Lower Merion, PA | Narberth, PA | United States |
| Rainfall | 48.4 | 48.5 | 38.1 |
| Snowfall | 17.8 | 17 | 27.8 |
| Precipitation Days | 113.6 | 117 | 106.2 |
| Sunny | 205 | 203 | 205 |
| Avg. July High | 87.1 | 86.8 | 85.8 |
| Avg. Jan. Low | 24.2 | 24.5 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
| UV Index | 4.1 | 4.1 | 4.3 |
| Elevation ft. | 289 | 308 | 2443 |