Current conditions at

Wittman Regional Airport (KOSH)

Lat: 43.97° N Lon: 88.56° W Elev: 801 ft.

Fair

91°F

33°C

Humidity 54%
Wind Speed Vrbl 3 mph
Barometer 30.07 in (1016.6 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 14 Jul 6:53 pm CDT
Detailed forecast for

Calumet County

Tonight
Muggy. Clear. Lows in the lower 70s. West wind 5 to 10 mph. Heat indices to 102.
Wednesday
Hot and humid. Partly cloudy. Patchy smoke in the morning, then smoke in the afternoon. Highs in the lower 90s. Northwest wind 5 to 10 mph shifting to the northeast in the afternoon. Heat indices to 97.
Wednesday Night
Muggy. Partly cloudy. Smoke. Lows in the upper 60s. East wind 5 to 10 mph in the evening becoming light and variable.
Thursday
Very warm. Mostly sunny. Smoke in the morning, then patchy smoke in the afternoon. Highs in the upper 80s. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Thursday Night
Mostly clear. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the middle 60s. East wind 5 to 10 mph. Chance of rain 30 percent.
Friday And Friday Night
Mostly clear. A 40 percent chance of showers and thunderstorms. Highs in the upper 80s. Lows in the upper 60s.
Saturday
Humid. Mostly sunny with a 30 percent chance of showers and thunderstorms. Highs in the middle 80s.
Saturday Night Through Sunday Night
Mostly clear. Lows in the middle 60s. Highs in the middle 80s.
Monday
Mostly sunny with a chance of showers. Highs in the middle 80s. Chance of rain 30 percent.
Monday Night
Mostly clear with a 30 percent chance of showers. Lows in the middle 60s.
Tuesday
Mostly sunny. Highs in the upper 70s.



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618 PM CDT Tue Jul 14 2026
 
 

Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database