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

7°F

-14°C

Humidity 80%
Wind Speed Calm
Barometer 30.32 in (1029.7 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Last update 3 Feb 7:53 pm CST
Extended Forecast for

Green Lake WI

  • Tonight

    Tonight: Partly cloudy, with a low around 3. North wind around 5 mph becoming calm.

    Low: 3 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 23. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 23 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 9. Wind chill values between zero and 5. West wind 5 to 10 mph becoming southwest after midnight.

    Low: 9 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 30 percent chance of snow before noon. Mostly cloudy, with a high near 33. Southwest wind 10 to 15 mph.

    High: 33 °F

    Chance Snow
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 25. West wind 10 to 15 mph.

    Low: 25 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: Partly sunny, with a temperature rising to near 35 by 9am, then falling to around 27 during the remainder of the day. Northwest wind around 15 mph.

    High: 35 °F⇓

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 5. North wind 5 to 15 mph.

    Low: 5 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 25. North wind 5 to 10 mph becoming south in the afternoon.

    High: 25 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Slight Chance
    Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 3. North wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 23. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 9. Wind chill values between zero and 5. West wind 5 to 10 mph becoming southwest after midnight.
Thursday
A 30 percent chance of snow before noon. Mostly cloudy, with a high near 33. Southwest wind 10 to 15 mph.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 25. West wind 10 to 15 mph.
Friday
Partly sunny, with a temperature rising to near 35 by 9am, then falling to around 27 during the remainder of the day. Northwest wind around 15 mph.
Friday Night
Mostly clear, with a low around 5. North wind 5 to 15 mph.
Saturday
Mostly sunny, with a high near 25. North wind 5 to 10 mph becoming south in the afternoon.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 16.
Sunday
Partly sunny, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Partly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Partly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Green Lake WI
 43.84°N 88.97°W (Elev. 801 ft)
Last Update:
7:33 pm CST Feb 3, 2026
Forecast Valid:
8pm CST Feb 3, 2026-6pm CST Feb 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