Surface observations

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

The weather observed at WASHINGTON DC, VA (KDCA) at 11:52 PM EDT was:
  The skies were cloudy.
  The weather reported was light rain.
  Temperature: 55F ( 13C)  Dewpoint:  50F ( 10C)  Relative Humidity:  82%
  Winds from the N  (350 degs) at  9 mph.
  Pressure: 1012.4 millibars.  Altimeter:29.90 inches of mercury.
  The prevailing visibility was 10 miles.
  There has been 0.12 inches of precipitation in the past hour.