National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Wittman Regional Airport (KOSH)

Lat: 43.97°NLon: 88.56°WElev: 801ft.

Overcast

21°F

-6°C

Humidity 85%
Wind Speed S 16 mph
Barometer 29.75 in (1009.4 mb)
Dewpoint 17°F (-8°C)
Visibility 7.00 mi
Wind Chill7°F (-14°C)
Last update 9 Dec 3:53 am CST
Extended Forecast for

2 Miles SE Green Lake WI

Winter Weather Advisory December 9, 06:00pm until December 10, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: A 20 percent chance of snow. Cloudy, with a low around 18. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 18 °F

    Slight Chance
    Snow and
    Breezy

  • Tuesday

    Tuesday: A slight chance of snow before 7am, then a chance of snow after 4pm. Cloudy, with a high near 30. West wind 5 to 15 mph. Chance of precipitation is 50%.

    High: 30 °F

    Slight Chance
    Snow then
    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow, possibly mixed with rain, becoming all snow after 3am. The snow could be heavy at times. Low around 25. Windy, with a south wind 15 to 20 mph becoming northwest 20 to 25 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 25 °F

    Rain/Snow and
    Windy

  • Wednesday

    Wednesday: Snow likely before noon. Mostly cloudy, with a temperature falling to around 22 by 5pm. Windy, with a northwest wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 27 °F⇓

    Snow Likely
    and Windy
    then Partly
    Sunny and
    Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 3. Northwest wind 10 to 15 mph.

    Low: 3 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 17. West wind 5 to 10 mph.

    High: 17 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 1. West wind 5 to 10 mph.

    Low: 1 °F

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow. Mostly cloudy, with a high near 18. West wind 10 to 15 mph.

    High: 18 °F

    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -6. Breezy.

    Low: -6 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Overnight
A 20 percent chance of snow. Cloudy, with a low around 18. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 25 mph.
Tuesday
A slight chance of snow before 7am, then a chance of snow after 4pm. Cloudy, with a high near 30. West wind 5 to 15 mph. Chance of precipitation is 50%.
Tuesday Night
Snow, possibly mixed with rain, becoming all snow after 3am. The snow could be heavy at times. Low around 25. Windy, with a south wind 15 to 20 mph becoming northwest 20 to 25 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Snow likely before noon. Mostly cloudy, with a temperature falling to around 22 by 5pm. Windy, with a northwest wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 3. Northwest wind 10 to 15 mph.
Thursday
Partly sunny, with a high near 17. West wind 5 to 10 mph.
Thursday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 1. West wind 5 to 10 mph.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 18. West wind 10 to 15 mph.
Friday Night
Mostly cloudy, with a low around -6. Breezy.
Saturday
A 20 percent chance of snow after noon. Partly sunny and cold, with a high near 4.
Saturday Night
A 20 percent chance of snow. Partly cloudy, with a low around -10.
Sunday
Sunny and cold, with a high near 5.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -6.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Green Lake WI
 43.81°N 88.94°W (Elev. 850 ft)
Last Update:
4:17 am CST Dec 9, 2025
Forecast Valid:
4am CST Dec 9, 2025-6pm CST Dec 15, 2025
 
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