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

East Troy Municipal Airport (K57C)

Lat: 42.8°NLon: 88.37°WElev: 860ft.

Fair

61°F

16°C

Humidity 90%
Wind Speed Calm
Barometer 30.15 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 7 Sep 8:35 pm CDT
Extended Forecast for

4 Miles SW Sullivan WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. Southeast wind around 5 mph.

    Low: 59 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 82. South wind 5 to 10 mph.

    High: 82 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before noon, then a slight chance of showers between noon and 1pm. Mostly cloudy, with a high near 81. West wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. West wind 5 to 10 mph becoming light northwest after midnight.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Light northwest wind increasing to 5 to 10 mph in the morning.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79. Light south wind increasing to 5 to 10 mph in the morning.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 59. Southeast wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 82. South wind 5 to 10 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers likely and possibly a thunderstorm before noon, then a slight chance of showers between noon and 1pm. Mostly cloudy, with a high near 81. West wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Mostly clear, with a low around 55. West wind 5 to 10 mph becoming light northwest after midnight.
Thursday
Sunny, with a high near 77. Light northwest wind increasing to 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 53. Calm wind.
Friday
Sunny, with a high near 79. Light south wind increasing to 5 to 10 mph in the morning.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Chance of precipitation is 40%.
Saturday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 81.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 57.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Sullivan WI
 42.96°N 88.63°W (Elev. 850 ft)
Last Update:
6:26 pm CDT Sep 7, 2026
Forecast Valid:
8pm CDT Sep 7, 2026-6pm CDT Sep 14, 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