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.

Fair

62°F

17°C

Humidity 84%
Wind Speed S 3 mph
Barometer 30.09 in (1018.4 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 29 Aug 2:53 am CDT
Extended Forecast for

Cottage Grove WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 61. South wind around 5 mph.

    Low: 61 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 74. South wind 5 to 10 mph.

    High: 74 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 8pm, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 66. South wind around 10 mph. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Partly sunny, with a high near 86. South wind 10 to 15 mph. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South wind around 5 mph.

    Low: 70 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 88. Southwest wind 5 to 10 mph.

    High: 88 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. South wind around 5 mph.

    Low: 71 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88. Southwest wind around 5 mph.

    High: 88 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 61. South wind around 5 mph.
Saturday
A 50 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 74. South wind 5 to 10 mph.
Saturday Night
A chance of showers before 8pm, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 66. South wind around 10 mph. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Partly sunny, with a high near 86. South wind 10 to 15 mph. Chance of precipitation is 30%.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South wind around 5 mph.
Monday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 88. Southwest wind 5 to 10 mph.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. South wind around 5 mph.
Tuesday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88. Southwest wind around 5 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 70.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 84.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Friday
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:
2:36 am CDT Aug 29, 2026
Forecast Valid:
3am CDT Aug 29, 2026-6pm CDT Sep 4, 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