The weather observed at MADISON, WI (KMSN) at 05:53 AM CDT was: The skies were mostly cloudy. Temperature: 37F ( 3C) Dewpoint: 34F ( 1C) Relative Humidity: 87% Winds from the E (080 degs) at 7 mph. Pressure: 1020.9 millibars. Altimeter:30.14 inches of mercury. The prevailing visibility was 10 miles.