Surface observations

Data from the National Weather Service, made available here by the UAlbany Department of Atmospheric and Environmental Sciences

The weather observed at PHILADELPHIA, PA (KPHL) at 04:54 AM EDT was:
  The skies were mostly cloudy.
  Temperature: 68F ( 20C)  Dewpoint:  61F ( 16C)  Relative Humidity:  78%
  Winds from the S  (190 degs) at  7 mph.
  Pressure: 1022.5 millibars.  Altimeter:30.20 inches of mercury.
  The prevailing visibility was 10 miles.