| Chester, PA | Upper Darby, PA | United States |
Rainfall | 43 | 45 | 38 |
Snowfall | 15 | 18 | 28 |
Precipitation | 112 | 118 | 106 |
Sunny | 206 | 204 | 205 |
Avg. July High | 87 | 87 | 86 |
Avg. Jan. Low | 27 | 26 | 22 |
Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
UV Index | 3.8 | 3.8 | 4.3 |
Elevation | 13 | 56 | 2443 |