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.

A Few Clouds

66°F

19°C

Humidity 81%
Wind Speed Calm
Barometer 30.03 in (1016.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 27 Aug 7:53 pm CDT
Extended Forecast for

Monona WI

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 58. Northwest wind around 5 mph becoming calm.

    Low: 58 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. South wind around 5 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 80. South wind 5 to 10 mph.

    High: 80 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. South wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Showers
    Likely

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Southwest wind around 15 mph.

    High: 87 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 71. South wind around 10 mph.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Southwest wind around 10 mph.

    High: 87 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 58. Northwest wind around 5 mph becoming calm.
Friday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 62. South wind around 5 mph.
Saturday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 80. South wind 5 to 10 mph.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. South wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Southwest wind around 15 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 71. South wind around 10 mph.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Southwest wind around 10 mph.
Monday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 86.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Monona WI
 43.05°N 89.34°W (Elev. 850 ft)
Last Update:
7:56 pm CDT Aug 27, 2026
Forecast Valid:
8pm CDT Aug 27, 2026-6pm CDT Sep 3, 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