Surface observations

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

The weather observed at WASHINGTON DC, VA (KDCA) at 05:52 PM EDT was:
  The skies were mostly cloudy.
  Temperature: 90F ( 32C)  Dewpoint:  66F ( 19C)  Relative Humidity:  46%
  Winds from the W  (260 degs) at 13 mph.
  Pressure:  999.0 millibars.  Altimeter:29.50 inches of mercury.
  The prevailing visibility was 10 miles.
  There has been 0.00 inches of precipitation in the past hour.