The weather observed at BALTO/WASH INTL, MD (KBWI) at 11:54 PM EDT was: The skies were cloudy. Temperature: 54F ( 12C) Dewpoint: 46F ( 8C) Relative Humidity: 74% Winds from the E (090 degs) at 13 mph. Pressure: 1020.4 millibars. Altimeter:30.14 inches of mercury. The prevailing visibility was 10 miles.