The weather observed at DOVER AFB, DE (KDOV) at 01:55 AM EST was: The skies were clear. Temperature: 45F ( 7C) Dewpoint: 30F ( -1C) Relative Humidity: 57% Winds from the NW (310 degs) at 13 mph. Pressure: 1011.9 millibars. Altimeter:29.87 inches of mercury. The prevailing visibility was 10 miles.