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

71°F

22°C

Humidity 59%
Wind Speed NE 5 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 24 Aug 6:53 pm CDT
Extended Forecast for

Cottage Grove WI

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 81. Light south wind increasing to 5 to 10 mph in the morning.

    High: 81 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 64. South wind 5 to 10 mph.

    Low: 64 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms. Sunny, with a high near 81. Southwest wind 10 to 15 mph becoming west in the afternoon. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61. West wind around 5 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Northwest wind around 5 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Northwest wind around 5 mph becoming calm.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Calm wind becoming east around 5 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, mostly clear, with a low around 56. Calm wind.
Tuesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 81. Light south wind increasing to 5 to 10 mph in the morning.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 64. South wind 5 to 10 mph.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 81. Southwest wind 10 to 15 mph becoming west in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 61. West wind around 5 mph.
Thursday
Sunny, with a high near 81. Northwest wind around 5 mph.
Thursday Night
Mostly clear, with a low around 58. Northwest wind around 5 mph becoming calm.
Friday
Sunny, with a high near 80. Calm wind becoming east around 5 mph.
Friday Night
Partly cloudy, with a low around 60.
Saturday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 80.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cottage Grove WI
 43.09°N 89.19°W (Elev. 919 ft)
Last Update:
6:46 pm CDT Aug 24, 2026
Forecast Valid:
7pm CDT Aug 24, 2026-6pm CDT Aug 31, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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