| | Willow Grove, PA | Georgetown, DE | United States |
| Rainfall | 47.8 | 45.3 | 38.1 |
| Snowfall | 17.4 | 12.2 | 27.8 |
| Precipitation Days | 108.9 | 121.7 | 106.2 |
| Sunny | 203 | 204 | 205 |
| Avg. July High | 85.3 | 86.5 | 85.8 |
| Avg. Jan. Low | 24.1 | 25.6 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.4 | 7 |
| UV Index | 4.1 | 3.9 | 4.3 |
| Elevation ft. | 269 | 52 | 2443 |