The weather observed at WASHINGTON DC, VA (KDCA) at 03:52 PM EST was: The skies were cloudy. The weather reported was light rain and fog. Temperature: 34F ( 1C) Dewpoint: 30F ( -1C) Relative Humidity: 85% Winds from the CLM(CLM degs) at 0 mph. Pressure: 1027.0 millibars. Altimeter:30.33 inches of mercury. The prevailing visibility was 3 miles. There has been 0.01 inches of precipitation in the past hour. There has been 0.11 inches of precipitation in the past 6 hours.