The weather observed at MADISON, WI (KMSN) at 05:53 AM CDT was: The skies were cloudy. Temperature: 41F ( 5C) Dewpoint: 36F ( 2C) Relative Humidity: 81% Winds from the NNW(340 degs) at 8 mph. Pressure: 1025.4 millibars. Altimeter:30.27 inches of mercury. The prevailing visibility was 10 miles.