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.

Partly Cloudy

81°F

27°C

Humidity 77%
Wind Speed Calm
Barometer 29.91 in (1011.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 1 Sep 8:53 pm CDT
Extended Forecast for

Oshkosh, Wittman Regional Airport WI

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 71. South southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 71 °F

    Mostly Cloudy
    then Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 3pm, then a slight chance of showers between 3pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. Heat index values as high as 91. Light and variable wind becoming south southwest around 6 mph in the morning. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread fog, mainly after 4am. Otherwise, partly cloudy, with a low around 69. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 69 °F

    Heavy Rain
    then Chance
    Showers and
    Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Widespread fog, mainly before 8am. Otherwise, mostly cloudy, with a high near 83. Heat index values as high as 88. East southeast wind 3 to 6 mph. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely and
    Fog

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. East southeast wind around 6 mph. Chance of precipitation is 70%.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.

    High: 83 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 71. South southwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms before 3pm, then a slight chance of showers between 3pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. Heat index values as high as 91. Light and variable wind becoming south southwest around 6 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Widespread fog, mainly after 4am. Otherwise, partly cloudy, with a low around 69. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Widespread fog, mainly before 8am. Otherwise, mostly cloudy, with a high near 83. Heat index values as high as 88. East southeast wind 3 to 6 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. East southeast wind around 6 mph. Chance of precipitation is 70%.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 82.
Saturday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 81.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 62.
Labor Day
Partly sunny, with a high near 76.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 59.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Oshkosh, Wittman Regional Airport WI
 44.02°N 88.56°W (Elev. 758 ft)
Last Update:
8:42 pm CDT Sep 1, 2026
Forecast Valid:
8pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

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Chance of Precipitation