The weather observed at MADISON, WI (KMSN) at 08:53 PM CDT was: The skies were partly cloudy. Temperature: 71F ( 22C) Dewpoint: 61F ( 16C) Relative Humidity: 70% Winds were calm. Pressure: 1011.2 millibars. Altimeter:29.88 inches of mercury. The prevailing visibility was 10 miles.