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

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Mostly Cloudy

66°F

19°C

Humidity 84%
Wind Speed Calm
Barometer 29.99 in (1015.2 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 25 Jun 8:53 pm CDT
Extended Forecast for

Sun Prairie WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. East wind around 5 mph.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 73. East wind 5 to 10 mph.

    High: 73 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54. East wind around 5 mph.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 78. Northeast wind 5 to 10 mph becoming southeast in the afternoon.

    High: 78 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 59. Southeast wind around 5 mph.

    Low: 59 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 84. Southeast wind 5 to 15 mph.

    High: 84 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. Southeast wind around 10 mph.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 91. South wind 10 to 15 mph.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 54. East wind around 5 mph.
Friday
Partly sunny, with a high near 73. East wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 54. East wind around 5 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 78. Northeast wind 5 to 10 mph becoming southeast in the afternoon.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 59. Southeast wind around 5 mph.
Sunday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 84. Southeast wind 5 to 15 mph.
Sunday Night
Partly cloudy, with a low around 72. Southeast wind around 10 mph.
Monday
Mostly sunny and hot, with a high near 91. South wind 10 to 15 mph.
Monday Night
Partly cloudy, with a low around 75.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 92.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 93.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Thursday
Mostly sunny and hot, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sun Prairie WI
 43.17°N 89.21°W (Elev. 948 ft)
Last Update:
8:42 pm CDT Jun 25, 2026
Forecast Valid:
9pm CDT Jun 25, 2026-6pm CDT Jul 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation