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

59°F

15°C

Humidity 94%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 21 Jun 7:15 am CDT
Extended Forecast for

4 Miles SW Sullivan WI

  • Today

    Today: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 72 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: A 50 percent chance of showers before 1am. Mostly cloudy, with a low around 53. East wind around 10 mph becoming northeast after midnight.

    Low: 53 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 73. Northeast wind around 10 mph.

    High: 73 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. Northeast wind 5 to 10 mph becoming light east in the evening.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Calm wind becoming north around 5 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 55. South wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Partly Cloudy
    then Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 76. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
A 50 percent chance of showers before 1am. Mostly cloudy, with a low around 53. East wind around 10 mph becoming northeast after midnight.
Monday
Mostly sunny, with a high near 73. Northeast wind around 10 mph.
Monday Night
Mostly clear, with a low around 50. Northeast wind 5 to 10 mph becoming light east in the evening.
Tuesday
Mostly sunny, with a high near 76. Calm wind becoming north around 5 mph.
Tuesday Night
Showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 55. South wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 76. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm in the evening.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 56.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
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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:
5:57 am CDT Jun 21, 2026
Forecast Valid:
7am CDT Jun 21, 2026-6pm CDT Jun 27, 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