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

39°F

4°C

Humidity 41%
Wind Speed S 9 mph
Barometer 30.32 in (1028.3 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 2 Mar 12:53 pm CST
Extended Forecast for

Winnebago WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 42. South wind 7 to 10 mph.

    High: 42 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 29. South wind 5 to 7 mph becoming calm after midnight.

    Low: 29 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of snow and freezing rain before 8am, then a slight chance of rain between 8am and 11am. Cloudy, then gradually becoming mostly sunny, with a high near 43. Calm wind. Chance of precipitation is 20%.

    High: 43 °F

    Slight Chance
    Wintry Mix
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Sunny, with a high near 48. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 48 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain. Partly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A 50 percent chance of rain. Mostly cloudy, with a high near 45.

    High: 45 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Cloudy, with a low around 36.

    Low: 36 °F

    Slight Chance
    Rain then
    Cloudy

  • Friday

    Friday: Rain, mainly after noon. High near 53. Chance of precipitation is 80%.

    High: 53 °F

    Chance Rain
    then Rain

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 42. South wind 7 to 10 mph.
Tonight
Increasing clouds, with a low around 29. South wind 5 to 7 mph becoming calm after midnight.
Tuesday
A slight chance of snow and freezing rain before 8am, then a slight chance of rain between 8am and 11am. Cloudy, then gradually becoming mostly sunny, with a high near 43. Calm wind. Chance of precipitation is 20%.
Tuesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 27. Calm wind.
Wednesday
Sunny, with a high near 48. Calm wind becoming southeast around 6 mph in the afternoon.
Wednesday Night
A 20 percent chance of rain. Partly cloudy, with a low around 34.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 45.
Thursday Night
A 20 percent chance of rain before midnight. Cloudy, with a low around 36.
Friday
Rain, mainly after noon. High near 53. Chance of precipitation is 80%.
Friday Night
Rain and possibly a thunderstorm. Low around 43. Chance of precipitation is 80%.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly sunny, with a high near 54.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winnebago WI
 44.08°N 88.53°W (Elev. 787 ft)
Last Update:
12:56 pm CST Mar 2, 2026
Forecast Valid:
1pm CST Mar 2, 2026-6pm CDT Mar 8, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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