The weather observed at MADISON, WI (KMSN) at 07:53 PM CDT was: The skies were mostly clear. Temperature: 81F ( 27C) Dewpoint: 63F ( 17C) Relative Humidity: 54% Winds were calm. Pressure: 1013.6 millibars. Altimeter:29.95 inches of mercury. The prevailing visibility was 10 miles.