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.

Rain Fog/Mist

62°F

17°C

Humidity 93%
Wind Speed Calm
Barometer 30.01 in (1015.7 mb)
Dewpoint 60°F (16°C)
Visibility 3.00 mi
Last update 21 Aug 8:53 am CDT
Extended Forecast for

Green Lake WISimilar City Names

  • Today

    Today: Showers and thunderstorms likely, mainly before 1pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 78. Southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Heavy Rain
    then Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 59. Southwest wind around 5 mph becoming northwest in the evening.

    Low: 59 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 77. Northwest wind 5 to 15 mph.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. North wind 5 to 10 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. Northwest wind 5 to 10 mph.

    High: 76 °F

    Sunny

  • Sunday Night

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

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 76. Calm wind.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55. South wind around 5 mph.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 1pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 78. Southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 59. Southwest wind around 5 mph becoming northwest in the evening.
Saturday
Mostly sunny, with a high near 77. Northwest wind 5 to 15 mph.
Saturday Night
Mostly clear, with a low around 54. North wind 5 to 10 mph.
Sunday
Sunny, with a high near 76. Northwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 52. Northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 76. Calm wind.
Monday Night
Partly cloudy, with a low around 55. South wind around 5 mph.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
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:
8:36 am CDT Aug 21, 2026
Forecast Valid:
9am CDT Aug 21, 2026-6pm CDT Aug 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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