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

73°F

23°C

Humidity 64%
Wind Speed S 8 mph
Barometer 29.84 in (1009.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 Apr 11:53 am CDT
Extended Forecast for

2 Miles SE Green Lake WI

Flood Watch April 13, 04:00pm until April 14, 07:00am
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 76. South wind 5 to 10 mph. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then a slight chance of showers. Low around 57. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 57 °F

    T-storms then
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 75. West wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Partly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 10pm, then showers likely. Low around 51. East wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 64. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 52. East wind around 10 mph becoming south after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers
    Likely

  • Thursday

    Thursday: A 50 percent chance of showers. Partly sunny, with a high near 69. South wind around 10 mph becoming west in the afternoon.

    High: 69 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49. North wind 5 to 10 mph becoming southeast after midnight.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 76. South wind 5 to 10 mph. Chance of precipitation is 40%.
Tonight
Showers and thunderstorms before 4am, then a slight chance of showers. Low around 57. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 75. West wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm before 10pm, then showers likely. Low around 51. East wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 64. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 52. East wind around 10 mph becoming south after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 69. South wind around 10 mph becoming west in the afternoon.
Thursday Night
Mostly clear, with a low around 49. North wind 5 to 10 mph becoming southeast after midnight.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76.
Friday Night
Showers and possibly a thunderstorm. Low around 47. Chance of precipitation is 80%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 58.
Saturday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 31. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Green Lake WI
 43.81°N 88.94°W (Elev. 850 ft)
Last Update:
12:26 pm CDT Apr 13, 2026
Forecast Valid:
12pm CDT Apr 13, 2026-6pm CDT Apr 19, 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