Current conditions at

Wittman Regional Airport (KOSH)

Lat: 43.97°NLon: 88.56°WElev: 801ft.

Fog/Mist

54°F

12°C

Humidity 100%
Wind Speed NW 5 mph
Barometer 29.73 in (1006.5 mb)
Dewpoint 54°F (12°C)
Visibility 2.00 mi
Wind Chill53°F (12°C)
Last update 15 Apr 9:53 am CDT
Extended Forecast for

Winnebago WI

Dense Fog Advisory April 15, 09:59am until April 15, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory April 15, 09:59am until April 15, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Today

    High: 61 °F

    Showers
    Likely and
    Areas Dense
    Fog

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then a chance of showers.  Patchy fog after 9pm.  Otherwise, cloudy, with a low around 47. East northeast wind around 6 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of rain after 1pm.  Widespread fog, mainly before 8am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 62. North northeast wind around 7 mph.  Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Chance
    Showers and
    Fog

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47. South southeast wind 3 to 5 mph.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of rain after 1pm.  Partly sunny, with a high near 71. South southeast wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 71 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm.  Low around 43. Chance of precipitation is 90%.

    Low: 43 °F

    Rain

  • Saturday

    Saturday: A 40 percent chance of rain.  Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A slight chance of rain before 10pm, then a slight chance of snow.  Mostly cloudy, with a low around 30. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Areas of dense fog before 1pm. Otherwise, mostly cloudy, with a high near 61. East northeast wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 4am, then a chance of showers. Patchy fog after 9pm. Otherwise, cloudy, with a low around 47. East northeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of rain after 1pm. Widespread fog, mainly before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 62. North northeast wind around 7 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 47. South southeast wind 3 to 5 mph.
Friday
A 20 percent chance of rain after 1pm. Partly sunny, with a high near 71. South southeast wind 6 to 14 mph, with gusts as high as 24 mph.
Friday Night
Rain and possibly a thunderstorm. Low around 43. Chance of precipitation is 90%.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 53.
Saturday Night
A slight chance of rain before 10pm, then a slight chance of snow. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.
Sunday
A 20 percent chance of snow before 1pm. Mostly sunny, with a high near 47.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 66.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Winnebago WI
 44.08°N 88.53°W (Elev. 787 ft)
9:54 am CDT Apr 15, 2026
9am CDT Apr 15, 2026-6pm CDT Apr 21, 2026
 
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