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

77°F

25°C

Humidity 74%
Wind Speed S 9 mph
Barometer 30.04 in (1016.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 15 Jul 8:53 am CDT
Extended Forecast for

Green Lake WI

  • Today

    Today: Sunny, with a high near 87. Southwest wind around 10 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 68. South wind around 5 mph.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 85. South wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 85 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. North wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Thursday

    Thursday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 70. North wind around 10 mph. Chance of precipitation is 20%.

    High: 70 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52. Northeast wind around 5 mph.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 76. Northeast wind around 5 mph becoming southeast in the afternoon.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 59. Southeast wind around 5 mph.

    Low: 59 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 87. Southwest wind around 10 mph.
Tonight
Mostly clear, with a low around 68. South wind around 5 mph.
Wednesday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 85. South wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. North wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 70. North wind around 10 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 52. Northeast wind around 5 mph.
Friday
Sunny, with a high near 76. Northeast wind around 5 mph becoming southeast in the afternoon.
Friday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 59. Southeast wind around 5 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 63.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 61.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Green Lake WI
 43.86°N 88.93°W (Elev. 846 ft)
Last Update:
5:38 am CDT Jul 15, 2025
Forecast Valid:
9am CDT Jul 15, 2025-6pm CDT Jul 21, 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