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

68°F

20°C

Humidity 65%
Wind Speed NW 8 mph
Barometer 30.06 in (1017.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 10 Sep 9:53 am CDT
Extended Forecast for

Winnebago WI

  • Today

    Today: Sunny, with a high near 76. West northwest wind around 7 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Light and variable wind becoming south southwest 5 to 8 mph after midnight.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. South wind 10 to 14 mph, with gusts as high as 21 mph.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 78. South southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 78 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.

    High: 75 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 76. West northwest wind around 7 mph.
Tonight
Mostly clear, with a low around 60. Light and variable wind becoming south southwest 5 to 8 mph after midnight.
Friday
Sunny, with a high near 78. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 64. South wind 10 to 14 mph, with gusts as high as 21 mph.
Saturday
Partly sunny, with a high near 78. South southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.
Monday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 59. Breezy. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winnebago WI
 44.04°N 88.5°W (Elev. 748 ft)
Last Update:
8:42 am CDT Sep 10, 2026
Forecast Valid:
10am CDT Sep 10, 2026-6pm CDT Sep 16, 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