The weather observed at MADISON, WI (KMSN) at 03:53 PM CDT was: The skies were clear. Temperature: 89F ( 32C) Dewpoint: 68F ( 20C) Relative Humidity: 50% Winds were variable at 5 mph. Pressure: 1021.3 millibars. Altimeter:30.18 inches of mercury. The prevailing visibility was 10 miles.