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.

Overcast

73°F

23°C

Humidity 96%
Wind Speed W 7 mph
Barometer 29.98 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 16 Aug 8:35 am CDT
Extended Forecast for

3 Miles SW Sullivan WI

  • Today

    Today: Partly sunny, with a high near 83. Northwest wind 5 to 15 mph.

    High: 83 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. Calm wind becoming southwest around 5 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. West wind 5 to 10 mph.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 76. Calm wind becoming north around 5 mph in the morning.

    High: 76 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 77.

    High: 77 °F

    Sunny then
    Slight Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 83. Northwest wind 5 to 15 mph.
Tonight
Partly cloudy, with a low around 61. Northwest wind 5 to 10 mph becoming light north after midnight.
Monday
Mostly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 62. Calm wind becoming southwest around 5 mph.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. West wind 5 to 10 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Wednesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 76. Calm wind becoming north around 5 mph in the morning.
Wednesday Night
Mostly clear, with a low around 55. Calm wind.
Thursday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 57.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Sullivan WI
 42.98°N 88.63°W (Elev. 840 ft)
Last Update:
8:47 am CDT Aug 16, 2026
Forecast Valid:
8am CDT Aug 16, 2026-6pm CDT Aug 22, 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