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.

Overcast

73°F

23°C

Humidity 89%
Wind Speed SE 8 mph
Barometer 30.08 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 18 Aug 9:15 am CDT
Extended Forecast for

4 Miles SW Sullivan WI

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 82. South wind around 10 mph.

    High: 82 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 9pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming southwest after midnight. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

    Low: 69 °F

    Heavy Rain
    then Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 81. West wind 5 to 10 mph becoming northwest in the afternoon.

    High: 81 °F

    Patchy Fog
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63. North wind around 5 mph.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76. North wind 5 to 10 mph.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. Northeast wind around 5 mph becoming calm after midnight.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Calm wind becoming northeast around 5 mph in the morning.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. East wind around 5 mph becoming calm.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 82. South wind around 10 mph.
Tonight
Showers and thunderstorms likely, mainly before 9pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming southwest after midnight. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 81. West wind 5 to 10 mph becoming northwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 63. North wind around 5 mph.
Wednesday
Mostly sunny, with a high near 76. North wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 59. Northeast wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 79. Calm wind becoming northeast around 5 mph in the morning.
Thursday Night
Mostly clear, with a low around 57. East wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 70.
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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:
6:28 am CDT Aug 18, 2025
Forecast Valid:
9am CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
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