National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Wittman Regional Airport (KOSH)

Lat: 43.97°NLon: 88.56°WElev: 801ft.

Fog/Mist

69°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 29.91 in (1011.5 mb)
Dewpoint 69°F (21°C)
Visibility 6.00 mi
Last update 3 Sep 12:53 am CDT
Extended Forecast for

Chilton WI

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly between 10am and noon. Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 81. Heat index values as high as 84. Light and variable wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    T-storms
    Likely and
    Areas Fog

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 4am, then a chance of showers and thunderstorms after 4am. Low around 66. East southeast wind around 5 mph becoming light and variable. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 66 °F

    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 82. Heat index values as high as 88. East wind 3 to 7 mph.

    High: 82 °F

    Chance
    T-storms then
    Partly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Increasing clouds, with a low around 64. East northeast wind 3 to 8 mph.

    Low: 64 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 70. Calm wind.
Thursday
Showers and thunderstorms likely, mainly between 10am and noon. Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 81. Heat index values as high as 84. Light and variable wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 4am, then a chance of showers and thunderstorms after 4am. Low around 66. East southeast wind around 5 mph becoming light and variable. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Partly sunny, with a high near 82. Heat index values as high as 88. East wind 3 to 7 mph.
Friday Night
A 40 percent chance of showers and thunderstorms. Increasing clouds, with a low around 64. East northeast wind 3 to 8 mph.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 61.
Labor Day
Partly sunny, with a high near 79.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 63.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 79.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 67.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chilton WI
 44.02°N 88.17°W (Elev. 850 ft)
Last Update:
1:21 am CDT Sep 3, 2026
Forecast Valid:
1am CDT Sep 3, 2026-6pm CDT Sep 9, 2026
 
Forecast Discussion
 
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Additional Resources

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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