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

35°F

2°C

Humidity 89%
Wind Speed S 13 mph
Barometer 30.00 in (1016.9 mb)
Dewpoint 32°F (0°C)
Visibility 7.00 mi
Wind Chill26°F (-3°C)
Last update 27 Dec 8:53 am CST
Extended Forecast for

Green Lake WISimilar City Names

Winter Weather Advisory December 28, 09:00pm until December 29, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: Patchy fog after 10am. Otherwise, cloudy, with a high near 40. South wind around 10 mph.

    High: 40 °F

    Patchy Fog

  • Tonight

    Tonight: A 30 percent chance of rain, mainly between midnight and 2am. Patchy fog. Otherwise, cloudy, with a low around 34. Southeast wind 5 to 10 mph.

    Low: 34 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday

    Sunday: Rain, mainly after 9am. High near 42. East wind 5 to 15 mph becoming north in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 42 °F

    Rain Likely
    then Rain

  • Sunday Night

    Sunday Night: Snow, possibly mixed with rain, becoming all snow after midnight. Low around 18. Windy, with a west wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 18 °F

    Windy.
    Rain/Snow
    then Snow

  • Monday

    Monday: A 50 percent chance of snow before noon. Mostly cloudy, with a high near 24. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 40 mph.

    High: 24 °F

    Windy. Chance
    Snow then
    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 7. Windy, with a northwest wind 15 to 25 mph, with gusts as high as 30 mph.

    Low: 7 °F

    Partly Cloudy
    and Windy

  • Tuesday

    Tuesday: Partly sunny, with a high near 24. West wind 10 to 15 mph.

    High: 24 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 15. Breezy, with a west wind 15 to 20 mph.

    Low: 15 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny
    then Slight
    Chance Snow

Detailed Forecast

Today
Patchy fog after 10am. Otherwise, cloudy, with a high near 40. South wind around 10 mph.
Tonight
A 30 percent chance of rain, mainly between midnight and 2am. Patchy fog. Otherwise, cloudy, with a low around 34. Southeast wind 5 to 10 mph.
Sunday
Rain, mainly after 9am. High near 42. East wind 5 to 15 mph becoming north in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Snow, possibly mixed with rain, becoming all snow after midnight. Low around 18. Windy, with a west wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Monday
A 50 percent chance of snow before noon. Mostly cloudy, with a high near 24. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 40 mph.
Monday Night
Partly cloudy, with a low around 7. Windy, with a northwest wind 15 to 25 mph, with gusts as high as 30 mph.
Tuesday
Partly sunny, with a high near 24. West wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 15. Breezy, with a west wind 15 to 20 mph.
Wednesday
A 20 percent chance of snow after noon. Partly sunny, with a high near 22.
Wednesday Night
A 20 percent chance of snow. Partly cloudy, with a low around 3.
New Year's Day
Sunny and cold, with a high near 10.
Thursday Night
Mostly clear, with a low around -3.
Friday
Sunny, with a high near 13.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Green Lake WISimilar City Names
 43.84°N 88.97°W (Elev. 801 ft)
Last Update:
9:14 am CST Dec 27, 2025
Forecast Valid:
9am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation