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

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast

26°F

-3°C

Humidity 81%
Wind Speed SE 6 mph
Barometer 30.13 in (1020.6 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 2 Dec 7:52 pm CST
Extended Forecast for

De Soto IL

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 21. Light south wind.

    Low: 21 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 43. South southwest wind 5 to 9 mph.

    High: 43 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 21. Light and variable wind becoming north 5 to 10 mph after midnight.

    Low: 21 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 30. North wind 5 to 10 mph becoming light north northeast in the afternoon.

    High: 30 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 18. Calm wind.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 39. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. Light southwest wind.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 42. Calm wind becoming west around 5 mph.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27. Calm wind becoming east around 5 mph after midnight.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 21. Light south wind.
Wednesday
Mostly sunny, with a high near 43. South southwest wind 5 to 9 mph.
Wednesday Night
Increasing clouds, with a low around 21. Light and variable wind becoming north 5 to 10 mph after midnight.
Thursday
Partly sunny, with a high near 30. North wind 5 to 10 mph becoming light north northeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 18. Calm wind.
Friday
Mostly sunny, with a high near 39. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 25. Light southwest wind.
Saturday
Mostly sunny, with a high near 42. Calm wind becoming west around 5 mph.
Saturday Night
Mostly cloudy, with a low around 27. Calm wind becoming east around 5 mph after midnight.
Sunday
A slight chance of rain and snow showers after noon. Mostly cloudy, with a high near 40. East wind 5 to 8 mph becoming north in the afternoon.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 23. North wind 3 to 6 mph.
Monday
Partly sunny, with a high near 37. North wind 5 to 7 mph becoming south southwest in the afternoon.
Monday Night
A slight chance of freezing rain. Mostly cloudy, with a low around 27. South wind 3 to 6 mph.
Tuesday
Partly sunny, with a high near 43. Southwest wind 6 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
De Soto IL
 37.81°N 89.23°W
Last Update:
7:21 pm CST Dec 2, 2025
Forecast Valid:
8pm CST Dec 2, 2025-6pm CST Dec 9, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation