Current conditions at

Wittman Regional Airport (KOSH)

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

Fair with Haze

79°F

26°C

Humidity 62%
Wind Speed S 15 G 24 mph
Barometer 29.79 in (1007.6 mb)
Dewpoint 65°F (18°C)
Visibility 5.00 mi
Heat Index81°F (27°C)
Last update 20 Jul 11:53 am CDT
Detailed forecast for

Winnebago County

This Afternoon
Breezy. Humid. Partly sunny with a chance of showers and thunderstorms. Some thunderstorms may be severe with damaging winds, large hail, and tornadoes. Highs in the middle 80s. Southwest wind 15 to 25 mph. Chance of rain 30 percent.
Tonight
Breezy. Muggy. Mostly cloudy with showers likely and a chance of thunderstorms in the evening, then clear after midnight. Some thunderstorms may be severe with damaging winds, large hail, and tornadoes in the evening. Lows in the upper 60s. Southwest wind 15 to 25 mph shifting to the west 10 to 15 mph after midnight. Chance of rain 60 percent.
Tuesday
Breezy. Partly cloudy. Highs in the upper 70s. Northwest wind 15 to 25 mph.
Tuesday Night
Cooler. Clear. Lows in the middle 50s. North wind 10 to 15 mph.
Wednesday
Sunny. Highs in the middle 70s. Northwest wind 10 to 15 mph.
Wednesday Night
Clear. Lows in the upper 50s.
Thursday Through Friday Night
Mostly clear. Highs in the lower 80s. Lows in the lower 60s.
Saturday
Sunny. Highs in the middle 80s.
Saturday Night And Sunday
Mostly clear. Lows in the middle 60s. Highs in the upper 80s.



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1228 PM CDT Mon Jul 20 2026
 
 

Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database