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.

Fair

70°F

21°C

Humidity 55%
Wind Speed E 8 mph
Barometer 29.93 in (1012.7 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 21 Jun 11:53 am CDT
Extended Forecast for

Eureka WI

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 74. East wind 5 to 8 mph.

    High: 74 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 53. East southeast wind 5 to 10 mph becoming light and variable.

    Low: 53 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 77. North northeast wind 7 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. North northeast wind around 6 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Light and variable wind.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Chance
    T-storms then
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 74. East wind 5 to 8 mph.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 53. East southeast wind 5 to 10 mph becoming light and variable.
Monday
Mostly sunny, with a high near 77. North northeast wind 7 to 10 mph.
Monday Night
Mostly clear, with a low around 52. North northeast wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 76. Light and variable wind.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 80%.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 54.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 57.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
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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:
12:17 pm CDT Jun 21, 2026
Forecast Valid:
12pm 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