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.

Mostly Cloudy

59°F

15°C

Humidity 90%
Wind Speed Calm
Barometer 30.27 in (1024.4 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 17 Sep 12:53 am CDT
Extended Forecast for

Eureka WI

  • Overnight

    Overnight: A chance of showers and thunderstorms. Cloudy, with a low around 56. Calm wind becoming north northeast around 6 mph. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 71. North northeast wind around 6 mph.

    High: 71 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Patchy fog between midnight and 1am. Otherwise, partly cloudy, with a low around 52. Light east northeast wind.

    Low: 52 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Showers likely, mainly after 5pm. Increasing clouds, with a high near 68. East wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    High: 68 °F

    Partly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers, with thunderstorms also possible after 1am. Low around 57. East wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

    Low: 57 °F

    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 67. Chance of precipitation is 90%.

    High: 67 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Cloudy, with a low around 56. Calm wind becoming north northeast around 6 mph. Chance of precipitation is 40%.
Thursday
A 30 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 71. North northeast wind around 6 mph.
Thursday Night
Patchy fog between midnight and 1am. Otherwise, partly cloudy, with a low around 52. Light east northeast wind.
Friday
Showers likely, mainly after 5pm. Increasing clouds, with a high near 68. East wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Friday Night
Showers, with thunderstorms also possible after 1am. Low around 57. East wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Saturday
Showers and possibly a thunderstorm. High near 67. Chance of precipitation is 90%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.
Sunday
Partly sunny, with a high near 64.
Sunday Night
Mostly cloudy, with a low around 48.
Monday
A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 61.
Monday Night
Mostly cloudy, with a low around 47.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Eureka WI
 43.98°N 88.84°W (Elev. 801 ft)
Last Update:
1:21 am CDT Sep 17, 2026
Forecast Valid:
1am CDT Sep 17, 2026-6pm CDT Sep 23, 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