Current conditions at

Wittman Regional Airport (KOSH)

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

Mostly Cloudy

86°F

30°C

Humidity 75%
Wind Speed Vrbl 5 mph
Barometer 29.85 in (1009.0 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 30 Jun 11:53 am CDT
Detailed forecast for

Calumet County

This Afternoon
Hot and humid. Partly cloudy. Highs around 90. Southwest wind 10 to 15 mph. Heat indices to 105.
Tonight
Muggy. Partly cloudy in the evening then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the middle 70s. Southwest wind 10 to 15 mph. Chance of rain 40 percent. Heat indices to 103.
Wednesday
Hot and humid. Partly cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Highs in the lower 90s. Southwest wind 10 to 15 mph. Chance of rain 50 percent. Heat indices to 101.
Wednesday Night
Muggy. Mostly clear with a chance of showers and thunderstorms in the evening, then showers likely and a chance of thunderstorms after midnight. Lows in the lower 70s. Southwest wind 10 to 15 mph. Chance of rain 70 percent. Heat indices to 99.
Thursday
Very warm and humid. Partly cloudy. A 40 percent chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. West wind 10 to 15 mph. Heat indices to 96.
Thursday Night And Friday
Showers likely and a chance of thunderstorms. Lows in the lower 70s. Highs in the middle 80s. Chance of rain 70 percent.
Friday Night
Muggy. Showers likely and a chance of thunderstorms. Lows in the upper 60s. Chance of rain 60 percent.
Independence Day
Humid. Partly sunny with a 40 percent chance of showers and thunderstorms. Highs in the lower 80s.
Saturday Night
Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows in the middle 60s.
Sunday
Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the lower 80s.
Sunday Night
Mostly clear with a chance of showers. Lows in the middle 60s. Chance of rain 30 percent.
Monday
Mostly sunny. Highs in the lower 80s.



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1222 PM CDT Tue Jun 30 2026
 
 

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