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.

Fog/Mist

27°F

-3°C

Humidity 100%
Wind Speed S 3 mph
Barometer 30.20 in (1023.7 mb)
Dewpoint 27°F (-3°C)
Visibility 3.00 mi
Last update 4 Mar 3:53 am CST
Extended Forecast for

Winnebago WI

  • Today

    Today: Sunny, with a high near 51. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 33. Light and variable wind becoming northeast around 6 mph after midnight.

    Low: 33 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 40 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 45. Northeast wind 7 to 9 mph.

    High: 45 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 37. Southeast wind 3 to 6 mph.

    Low: 37 °F

    Cloudy then
    Slight Chance
    Rain

  • Friday

    Friday: Rain, with thunderstorms also possible after noon. High near 58. Southeast wind 7 to 13 mph becoming south southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 100%.

    High: 58 °F

    Rain

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Low around 39. Chance of precipitation is 90%.

    Low: 39 °F

    Rain

  • Saturday

    Saturday: A 20 percent chance of rain before noon. Mostly sunny, with a high near 48.

    High: 48 °F

    Slight Chance
    Rain then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 51. Calm wind becoming south southeast around 5 mph in the afternoon.
Tonight
Increasing clouds, with a low around 33. Light and variable wind becoming northeast around 6 mph after midnight.
Thursday
A 40 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 45. Northeast wind 7 to 9 mph.
Thursday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 37. Southeast wind 3 to 6 mph.
Friday
Rain, with thunderstorms also possible after noon. High near 58. Southeast wind 7 to 13 mph becoming south southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 100%.
Friday Night
Rain and possibly a thunderstorm. Low around 39. Chance of precipitation is 90%.
Saturday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Sunny, with a high near 61.
Monday Night
A 20 percent chance of rain. Mostly clear, with a low around 42.
Tuesday
Rain likely. Partly sunny, with a high near 55. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Winnebago WI
 44.08°N 88.53°W (Elev. 787 ft)
Last Update:
3:56 am CST Mar 4, 2026
Forecast Valid:
4am CST Mar 4, 2026-6pm CDT Mar 10, 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