The weather observed at DETROIT/WAYNE, MI (KDTW) at 04:20 AM EDT was: The skies were cloudy. The weather reported was light rain. Temperature: 72F ( 22C) Dewpoint: 66F ( 19C) Relative Humidity: 83% Winds from the NW (300 degs) at 6 mph. Altimeter:30.02 inches of mercury. The prevailing visibility was 7 miles. There has been 0.00 inches of precipitation in the past hour.