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

83°F

28°C

Humidity 24%
Wind Speed SW 9 mph
Barometer 29.80 in (1008.0 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 16 May 4:53 pm CDT
Extended Forecast for

3 Miles S Green Lake WI

  • Tonight

    Tonight: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 52. Light and variable wind becoming east 5 to 10 mph after midnight.

    Low: 52 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 71. East wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Breezy, with a southeast wind 15 to 20 mph becoming south after midnight. Winds could gust as high as 30 mph.

    Low: 61 °F

    Partly Cloudy
    then Chance
    T-storms and
    Breezy

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Sunny through mid morning, then becoming mostly cloudy, with a high near 79. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 60. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Showers and
    Breezy

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 74. Breezy, with a south wind around 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

    High: 74 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 60. Northwest wind 10 to 15 mph.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 52. Light and variable wind becoming east 5 to 10 mph after midnight.
Sunday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 71. East wind around 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Breezy, with a southeast wind 15 to 20 mph becoming south after midnight. Winds could gust as high as 30 mph.
Monday
Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Sunny through mid morning, then becoming mostly cloudy, with a high near 79. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm. Low around 60. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 74. Breezy, with a south wind around 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Tuesday Night
Mostly cloudy, with a low around 43. Northwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 60. Northwest wind 10 to 15 mph.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
Sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 41.
Friday
Mostly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Green Lake WI
 43.81°N 88.97°W (Elev. 850 ft)
Last Update:
3:32 pm CDT May 16, 2026
Forecast Valid:
5pm CDT May 16, 2026-6pm CDT May 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