The weather observed at PHILADELPHIA, PA (KPHL) at 04:54 AM EST was: The skies were cloudy. The weather reported was light rain. Temperature: 48F ( 9C) Dewpoint: 47F ( 8C) Relative Humidity: 96% Winds from the NNW(340 degs) at 6 mph. Pressure: 1015.6 millibars. Altimeter:29.99 inches of mercury. The prevailing visibility was 7 miles. There has been 0.00 inches of precipitation in the past hour.