The weather observed at MADISON, WI (KMSN) at 12:53 PM CST was: The skies were mostly cloudy. Temperature: -5F (-21C) Dewpoint: -19F (-28C) Relative Humidity: 50% Winds from the NNE(020 degs) at 6 mph. Pressure: 1039.3 millibars. Altimeter:30.60 inches of mercury. The prevailing visibility was 10 miles.