| | Tewksbury, MA | Pottstown, PA | United States |
| Rainfall | 49.8 | 46.9 | 38.1 |
| Snowfall | 55.2 | 16.8 | 27.8 |
| Precipitation Days | 131.8 | 117.1 | 106.2 |
| Sunny | 201 | 209 | 205 |
| Avg. July High | 83 | 85.7 | 85.8 |
| Avg. Jan. Low | 16 | 22.8 | 21.7 |
| Comfort Index (higher=better) | 6.8 | 7.2 | 7 |
| UV Index | 3.5 | 4.1 | 4.3 |
| Elevation ft. | 121 | 154 | 2443 |