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

35°F

2°C

Humidity 76%
Wind Speed S 6 mph
Barometer 29.88 in (1012.8 mb)
Dewpoint 28°F (-2°C)
Visibility 9.00 mi
Wind Chill30°F (-1°C)
Last update 14 Feb 11:53 pm CST
Extended Forecast for

Green Lake WISimilar City Names

  • Overnight

    Overnight: Partly cloudy, with a low around 29. Southwest wind around 5 mph.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 49. Northwest wind around 5 mph.

    High: 49 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 32. Light and variable wind becoming south 10 to 15 mph in the evening.

    Low: 32 °F

    Increasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Sunny, with a high near 57. South wind 5 to 15 mph becoming northwest in the afternoon.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. North wind 5 to 10 mph becoming east after midnight.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 46. Breezy, with an east wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 46 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: Rain. Low around 39. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Breezy. Rain
    Likely then
    Rain

  • Wednesday

    Wednesday: A 50 percent chance of rain. Partly sunny, with a high near 55. Southeast wind around 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 55 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before midnight, then a slight chance of rain and snow. Partly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance Rain
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 29. Southwest wind around 5 mph.
Sunday
Sunny, with a high near 49. Northwest wind around 5 mph.
Sunday Night
Increasing clouds, with a low around 32. Light and variable wind becoming south 10 to 15 mph in the evening.
Washington's Birthday
Sunny, with a high near 57. South wind 5 to 15 mph becoming northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 31. North wind 5 to 10 mph becoming east after midnight.
Tuesday
Mostly cloudy, with a high near 46. Breezy, with an east wind 10 to 20 mph, with gusts as high as 25 mph.
Tuesday Night
Rain. Low around 39. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A 50 percent chance of rain. Partly sunny, with a high near 55. Southeast wind around 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
A chance of rain before midnight, then a slight chance of rain and snow. Partly cloudy, with a low around 30. Chance of precipitation is 30%.
Thursday
A slight chance of snow before noon, then a slight chance of rain and snow. Mostly sunny, with a high near 43. Chance of precipitation is 20%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 50%.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 34.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 18.
Saturday
Mostly sunny, with a high near 30.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Green Lake WISimilar City Names
 43.84°N 88.97°W (Elev. 801 ft)
Last Update:
12:42 am CST Feb 15, 2026
Forecast Valid:
12am CST Feb 15, 2026-6pm CST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation