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

Hazardous Weather Conditions

Current conditions at

East Troy Municipal Airport (K57C)

Lat: 42.8°NLon: 88.37°WElev: 860ft.

Partly Cloudy

80°F

27°C

Humidity 76%
Wind Speed SE 7 mph
Barometer 29.95 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 2 Sep 10:15 am CDT
Extended Forecast for

Mukwonago WI

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 90. Heat index values as high as 97. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm.

    Low: 71 °F

    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 87. South wind 5 to 10 mph becoming northwest in the afternoon.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Calm wind becoming southeast around 5 mph in the morning.

    High: 86 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.

    High: 82 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 66. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.

    High: 81 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 90. Heat index values as high as 97. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm.
Thursday
A 50 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 87. South wind 5 to 10 mph becoming northwest in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Calm wind becoming southeast around 5 mph in the morning.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East wind around 5 mph becoming calm in the evening.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
A slight chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 66. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Sunday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 64.
Labor Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 62.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mukwonago WI
 42.86°N 88.34°W (Elev. 791 ft)
Last Update:
9:57 am CDT Sep 2, 2026
Forecast Valid:
10am CDT Sep 2, 2026-6pm CDT Sep 8, 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