The weather observed at PHILADELPHIA, PA (KPHL) at 10:54 AM EDT was: The skies were cloudy. Temperature: 68F ( 20C) Dewpoint: 50F ( 10C) Relative Humidity: 53% Winds from the E (100 degs) at 13 mph. Pressure: 1025.2 millibars. Altimeter:30.28 inches of mercury. The prevailing visibility was 10 miles.