| | Haverford, PA | Swarthmore, PA | United States |
| Rainfall | 48.4 | 43.8 | 38.1 |
| Snowfall | 17.1 | 20 | 27.8 |
| Precipitation Days | 116.8 | 120.3 | 106.2 |
| Sunny | 204 | 208 | 205 |
| Avg. July High | 87.7 | 87.4 | 85.8 |
| Avg. Jan. Low | 23.3 | 26.2 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
| UV Index | 3.8 | 3.8 | 4.3 |
| Elevation ft. | 280 | 131 | 2443 |