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

44°F

7°C

Humidity 58%
Wind Speed NW 6 mph
Barometer 30.24 in (1025.3 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 14 Nov 2:53 pm CST
Extended Forecast for

Green Lake WI

  • Tonight

    Tonight: Partly cloudy, with a low around 27. North wind around 5 mph becoming calm in the evening.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 47. Calm wind.

    High: 47 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. Calm wind becoming south around 5 mph after midnight.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 52. Southwest wind 5 to 10 mph.

    High: 52 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34. Southwest wind around 10 mph.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 56. Southwest wind 10 to 15 mph.

    High: 56 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. South wind 10 to 15 mph.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 57. South wind around 15 mph, with gusts as high as 25 mph.

    High: 57 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after midnight. Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 27. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 47. Calm wind.
Sunday Night
Mostly clear, with a low around 27. Calm wind becoming south around 5 mph after midnight.
Monday
Sunny, with a high near 52. Southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 34. Southwest wind around 10 mph.
Tuesday
Sunny, with a high near 56. Southwest wind 10 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 38. South wind 10 to 15 mph.
Wednesday
Mostly sunny, with a high near 57. South wind around 15 mph, with gusts as high as 25 mph.
Wednesday Night
A 20 percent chance of rain after midnight. Partly cloudy, with a low around 46.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 42.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 58.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 47.
Saturday
Rain likely. Mostly cloudy, with a high near 61. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Green Lake WI
 43.83°N 88.94°W (Elev. 869 ft)
Last Update:
1:36 pm CST Nov 14, 2026
Forecast Valid:
3pm CST Nov 14, 2026-6pm CST Nov 21, 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