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 04:52 PM EST was:
  The skies were mostly clear.
  Temperature: 36F (  2C)  Dewpoint:   9F (-13C)  Relative Humidity:  32%
  Winds from the NW (320 degs) at  8 mph.
  Pressure: 1025.3 millibars.  Altimeter:30.28 inches of mercury.
  The prevailing visibility was 10 miles.