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.