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.

Overcast

62°F

17°C

Humidity 86%
Wind Speed E 5 mph
Barometer 30.25 in (1023.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 17 Sep 1:53 am CDT
Extended Forecast for

4 Miles S Chilton WI

  • Overnight

    Overnight: A 30 percent chance of showers, mainly after 5am. Cloudy, with a low around 55. North northeast wind 3 to 6 mph.

    Low: 55 °F

    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 72. Northeast wind around 7 mph.

    High: 72 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. East northeast wind around 5 mph becoming calm.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: Showers likely, mainly after 5pm. Increasing clouds, with a high near 67. East wind 6 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    High: 67 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers, with thunderstorms also possible after 1am. Low around 57. East wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.

    Low: 57 °F

    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 66. Chance of precipitation is 100%.

    High: 66 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly after 5am. Cloudy, with a low around 55. North northeast wind 3 to 6 mph.
Thursday
A 30 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 72. Northeast wind around 7 mph.
Thursday Night
Partly cloudy, with a low around 52. East northeast wind around 5 mph becoming calm.
Friday
Showers likely, mainly after 5pm. Increasing clouds, with a high near 67. East wind 6 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Friday Night
Showers, with thunderstorms also possible after 1am. Low around 57. East wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.
Saturday
Showers and possibly a thunderstorm. High near 66. Chance of precipitation is 100%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Sunday
Partly sunny, with a high near 64.
Sunday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 50.
Monday
A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 60.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Chilton WI
 43.98°N 88.18°W (Elev. 958 ft)
Last Update:
1:21 am CDT Sep 17, 2026
Forecast Valid:
2am CDT Sep 17, 2026-6pm CDT Sep 23, 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