The weather observed at PHILADELPHIA, PA (KPHL) at 05:54 PM EDT was: The skies were mostly cloudy. Temperature: 80F ( 27C) Dewpoint: 72F ( 22C) Relative Humidity: 76% Winds from the SW (220 degs) at 7 mph. Pressure: 998.4 millibars. Altimeter:29.49 inches of mercury. The prevailing visibility was 10 miles.