The weather observed at WASHINGTON DC, VA (KDCA) at 07:52 PM EDT was: The skies were partly cloudy. Temperature: 84F ( 29C) Dewpoint: 73F ( 23C) Relative Humidity: 70% Winds from the ESE(110 degs) at 9 mph. Pressure: 1015.2 millibars. Altimeter:29.98 inches of mercury. The prevailing visibility was 10 miles. The maximum temperature in the past 6 hours was 91F. The minimum temperature in the past 6 hours was 84F.