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.

Fair

56°F

13°C

Humidity 90%
Wind Speed S 5 mph
Barometer 29.58 in (1001.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 17 Jun 7:53 am CDT
Extended Forecast for

Green Lake WI

  • Today

    Today: Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 61. Southeast wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 61 °F

    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely before 1am, then a chance of showers. Cloudy, with a low around 52. South wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely

  • Thursday

    Thursday: A 10 percent chance of showers after 5pm. Partly sunny, with a high near 70. Northwest wind 10 to 15 mph.

    High: 70 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50. West wind 5 to 10 mph.

    Low: 50 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 72. Northwest wind 5 to 10 mph.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 52. West wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76. West wind 5 to 10 mph.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 72.

    High: 72 °F

    Chance
    Showers

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 61. Southeast wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely before 1am, then a chance of showers. Cloudy, with a low around 52. South wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 10 percent chance of showers after 5pm. Partly sunny, with a high near 70. Northwest wind 10 to 15 mph.
Thursday Night
Mostly clear, with a low around 50. West wind 5 to 10 mph.
Juneteenth
Sunny, with a high near 72. Northwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 52. West wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 76. West wind 5 to 10 mph.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 72.
Sunday Night
A 40 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Green Lake WI
 43.84°N 88.97°W (Elev. 801 ft)
Last Update:
7:33 am CDT Jun 17, 2026
Forecast Valid:
8am CDT Jun 17, 2026-6pm CDT Jun 23, 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