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.

Overcast

53°F

12°C

Humidity 96%
Wind Speed SE 7 mph
Barometer 29.81 in (1009.6 mb)
Dewpoint 52°F (11°C)
Visibility 7.00 mi
Wind Chill51°F (11°C)
Last update 17 May 10:53 pm CDT
Extended Forecast for

2 Miles SSE Green Lake WI

  • Overnight

    Overnight: A slight chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a temperature rising to around 64 by 4am. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 57 °F⇑

    Chance
    T-storms

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly before noon. Mostly cloudy, with a high near 78. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 78 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms then
    Showers and
    Breezy

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm. High near 71. Breezy, with a southwest wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Breezy.
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. Northwest wind 10 to 15 mph.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. North wind 5 to 10 mph.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38. Northeast wind around 5 mph becoming southeast after midnight.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 62. East wind 5 to 10 mph.

    High: 62 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a temperature rising to around 64 by 4am. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Monday
A 50 percent chance of showers and thunderstorms, mainly before noon. Mostly cloudy, with a high near 78. Southwest wind around 15 mph, with gusts as high as 25 mph.
Monday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm. High near 71. Breezy, with a southwest wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Partly cloudy, with a low around 42. Northwest wind 10 to 15 mph.
Wednesday
Mostly sunny, with a high near 58. North wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 38. Northeast wind around 5 mph becoming southeast after midnight.
Thursday
Mostly sunny, with a high near 62. East wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 42.
Friday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 67.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 46.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 73.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 50.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Green Lake WI
 43.81°N 88.94°W (Elev. 850 ft)
Last Update:
11:31 pm CDT May 17, 2026
Forecast Valid:
12am CDT May 18, 2026-6pm CDT May 24, 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