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

Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Current conditions at

East Troy Municipal Airport (K57C)

Lat: 42.8°NLon: 88.37°WElev: 860ft.

Fair

38°F

3°C

Humidity 72%
Wind Speed SW 5 mph
Barometer 30.00 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 12 Jan 5:15 pm CST
Extended Forecast for

Mukwonago WI

  • Tonight

    Tonight: A chance of sprinkles between 3am and 5am. Increasing clouds, with a low around 32. Southwest wind 5 to 10 mph.

    Low: 32 °F

    Chance
    Sprinkles

  • Tuesday

    Tuesday: A chance of sprinkles after 3pm. Partly sunny, with a high near 46. West wind around 15 mph, with gusts as high as 30 mph.

    High: 46 °F

    Chance
    Sprinkles

  • Tuesday Night

    Tuesday Night: A slight chance of rain before 1am, then a slight chance of rain and snow between 1am and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 20. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 20 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 40 percent chance of snow. Partly sunny, with a high near 28. Blustery, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 28 °F

    Chance Snow
    and Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 10. North wind 10 to 15 mph.

    Low: 10 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 24. Northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 24 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 18. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 18 °F

    Snow Likely

  • Friday

    Friday: Snow likely. Cloudy, with a high near 30. West wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 30 °F

    Snow Likely

  • Friday Night

    Friday Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 13. Chance of precipitation is 60%.

    Low: 13 °F

    Snow Likely

Detailed Forecast

Tonight
A chance of sprinkles between 3am and 5am. Increasing clouds, with a low around 32. Southwest wind 5 to 10 mph.
Tuesday
A chance of sprinkles after 3pm. Partly sunny, with a high near 46. West wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
A slight chance of rain before 1am, then a slight chance of rain and snow between 1am and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 20. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of snow. Partly sunny, with a high near 28. Blustery, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 10. North wind 10 to 15 mph.
Thursday
Mostly sunny, with a high near 24. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
Thursday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 18. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Friday
Snow likely. Cloudy, with a high near 30. West wind 5 to 10 mph. Chance of precipitation is 70%.
Friday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 13. Chance of precipitation is 60%.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 17.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 4.
Sunday
A 20 percent chance of snow. Partly sunny, with a high near 14.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 3.
M.L.King Day
Partly sunny, with a high near 16.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mukwonago WI
 42.86°N 88.34°W (Elev. 791 ft)
Last Update:
3:13 pm CST Jan 12, 2026
Forecast Valid:
5pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation