National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Partly Cloudy

75°F

24°C

Humidity 79%
Wind Speed NE 8 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 5 Sep 6:53 pm CDT
Extended Forecast for

Sun Prairie WI

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 60. East wind around 5 mph.

    Low: 60 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 79. East wind around 5 mph.

    High: 79 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57. Southeast wind around 5 mph.

    Low: 57 °F

    Mostly Clear

  • Labor Day

    Labor Day: Mostly sunny, with a high near 77. Southeast wind 5 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. Southeast wind around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 84. South wind around 10 mph.

    High: 84 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. South wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 83. West wind 10 to 15 mph.

    High: 83 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 60. East wind around 5 mph.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 79. East wind around 5 mph.
Sunday Night
Mostly clear, with a low around 57. Southeast wind around 5 mph.
Labor Day
Mostly sunny, with a high near 77. Southeast wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 60. Southeast wind around 5 mph.
Tuesday
Partly sunny, with a high near 84. South wind around 10 mph.
Tuesday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. South wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 83. West wind 10 to 15 mph.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 55.
Friday
Mostly sunny, with a high near 79.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sun Prairie WI
 43.17°N 89.21°W (Elev. 948 ft)
Last Update:
5:41 pm CDT Sep 5, 2026
Forecast Valid:
7pm CDT Sep 5, 2026-6pm CDT Sep 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation