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 07:52 PM EST was:
  The skies were partly cloudy.
  Temperature: 61F ( 16C)  Dewpoint:  46F (  8C)  Relative Humidity:  59%
  Winds from the SW (210 degs) at  3 mph.
  Pressure: 1007.0 millibars.  Altimeter:29.74 inches of mercury.
  The prevailing visibility was 10 miles.