The weather observed at PHILADELPHIA, PA (KPHL) at 07:54 AM EST was: The skies were cloudy. Temperature: 65F ( 18C) Dewpoint: 61F ( 16C) Relative Humidity: 87% Winds from the S (190 degs) at 8 mph. Pressure: 1014.9 millibars. Altimeter:29.97 inches of mercury. The prevailing visibility was 10 miles.