The weather observed at PHILADELPHIA, PA (KPHL) at 09:54 AM EST was: The skies were mostly cloudy. Temperature: 53F ( 12C) Dewpoint: 41F ( 5C) Relative Humidity: 63% Winds from the N (010 degs) at 7 mph. Pressure: 1024.7 millibars. Altimeter:30.26 inches of mercury. The prevailing visibility was 10 miles.