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

Hazardous Weather Conditions

Current conditions at

Wittman Regional Airport (KOSH)

Lat: 43.97°NLon: 88.56°WElev: 801ft.

Fair

83°F

28°C

Humidity 70%
Wind Speed Calm
Barometer 29.90 in (1010.9 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 1 Sep 7:53 pm CDT
Extended Forecast for

Eureka WI

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 70. Southwest wind around 6 mph becoming calm in the evening.

    Low: 70 °F

    Mostly Cloudy
    then Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 3pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. Heat index values as high as 91. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers and
    Patchy Fog
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Widespread fog after 1am. Otherwise, partly cloudy, with a low around 67. Light east northeast wind. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers and
    Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Widespread fog, mainly before 9am. Otherwise, mostly cloudy, with a high near 83. Heat index values as high as 89. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely and
    Fog

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 66. East wind 3 to 5 mph. Chance of precipitation is 70%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 70. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 3pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. Heat index values as high as 91. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Widespread fog after 1am. Otherwise, partly cloudy, with a low around 67. Light east northeast wind. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Widespread fog, mainly before 9am. Otherwise, mostly cloudy, with a high near 83. Heat index values as high as 89. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 66. East wind 3 to 5 mph. Chance of precipitation is 70%.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Saturday
Partly sunny, with a high near 81.
Saturday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 81.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 61.
Labor Day
Partly sunny, with a high near 75.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 57.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 75.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Eureka WI
 44°N 88.86°W (Elev. 748 ft)
Last Update:
7:26 pm CDT Sep 1, 2026
Forecast Valid:
8pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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