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.

Overcast

55°F

13°C

Humidity 93%
Wind Speed N 6 mph
Barometer 29.98 in (1014.6 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 14 Oct 2:53 am CDT
Extended Forecast for

Winnebago WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 50. Light north northeast wind.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 61. North wind 5 to 8 mph.

    High: 61 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. East northeast wind around 7 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers, mainly after 1pm. High near 57. East wind 5 to 8 mph. Chance of precipitation is 100%.

    High: 57 °F

    Slight Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly before 1am. Low around 43. North wind 5 to 10 mph becoming west northwest 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%.

    Low: 43 °F

    Showers

  • Friday

    Friday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 54. Breezy.

    High: 54 °F

    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Areas of frost after 3am. Otherwise, mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58.

    High: 58 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 50. Light north northeast wind.
Wednesday
Partly sunny, with a high near 61. North wind 5 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 46. East northeast wind around 7 mph.
Thursday
Showers, mainly after 1pm. High near 57. East wind 5 to 8 mph. Chance of precipitation is 100%.
Thursday Night
Showers, mainly before 1am. Low around 43. North wind 5 to 10 mph becoming west northwest 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Friday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 54. Breezy.
Friday Night
Areas of frost after 3am. Otherwise, mostly clear, with a low around 34.
Saturday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58.
Saturday Night
Clear, with a low around 40.
Sunday
Sunny, with a high near 63.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 65.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 67.
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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:
2:36 am CDT Oct 14, 2026
Forecast Valid:
3am CDT Oct 14, 2026-6pm CDT Oct 20, 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