Surface observations

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

The weather observed at BOSTON, MA (KBOS) at 04:54 AM EST was:
  The skies were mostly cloudy.
  Temperature: 46F (  8C)  Dewpoint:  43F (  6C)  Relative Humidity:  87%
  Winds from the SSW(200 degs) at 12 mph.
  Pressure:  997.6 millibars.  Altimeter:29.46 inches of mercury.
  The prevailing visibility was 10 miles.