The weather observed at PHILADELPHIA, PA (KPHL) at 05:54 AM EST was: The skies were cloudy. Temperature: 48F ( 9C) Dewpoint: 39F ( 4C) Relative Humidity: 71% Winds from the NW (330 degs) at 7 mph. Pressure: 1014.0 millibars. Altimeter:29.95 inches of mercury. The prevailing visibility was 10 miles.