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

Wittman Regional Airport (KOSH)

Lat: 43.97°NLon: 88.56°WElev: 801ft.

A Few Clouds

66°F

19°C

Humidity 84%
Wind Speed W 6 mph
Barometer 29.92 in (1012.2 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 26 Aug 10:53 pm CDT
Extended Forecast for

Eureka WI

  • Tonight

    Tonight: Mostly clear, with a low around 59. West wind 3 to 5 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80. North northwest wind 5 to 9 mph.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. North wind around 5 mph becoming light and variable after midnight.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Light and variable wind becoming southwest around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 60. South wind 5 to 7 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 59. West wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 80. North northwest wind 5 to 9 mph.
Thursday Night
Mostly clear, with a low around 54. North wind around 5 mph becoming light and variable after midnight.
Friday
Sunny, with a high near 80. Light and variable wind becoming southwest around 5 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 60. South wind 5 to 7 mph.
Saturday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 80.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 84.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86.
Monday Night
A 40 percent chance of showers. Partly cloudy, with a low around 66.
Tuesday
Partly sunny, with a high near 85.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 62.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Eureka WI
 44°N 88.83°W (Elev. 797 ft)
Last Update:
9:46 pm CDT Aug 26, 2026
Forecast Valid:
11pm CDT Aug 26, 2026-6pm CDT Sep 2, 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