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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

71°F

22°C

Humidity 90%
Wind Speed E 5 mph
Barometer 30.05 in (1017.1 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 4 Aug 8:52 pm CDT
Extended Forecast for

De Soto IL

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 65. Light east wind.

    Low: 65 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67. Light east wind.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Light northeast wind.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Light southeast wind.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 70. Light east southeast wind.

    Low: 70 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91. Calm wind becoming south southeast around 6 mph in the morning.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71. Southeast wind 3 to 6 mph.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 65. Light east wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 86. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 67. Light east wind.
Wednesday
Sunny, with a high near 89. Light northeast wind.
Wednesday Night
Mostly clear, with a low around 69. Calm wind.
Thursday
Sunny, with a high near 91. Light southeast wind.
Thursday Night
Mostly clear, with a low around 70. Light east southeast wind.
Friday
Sunny, with a high near 91. Calm wind becoming south southeast around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 71. Southeast wind 3 to 6 mph.
Saturday
Sunny, with a high near 92. South wind 3 to 7 mph.
Saturday Night
Mostly clear, with a low around 72. South southeast wind 3 to 6 mph.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 91. South wind 3 to 7 mph.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind 3 to 6 mph.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southwest wind 3 to 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
De Soto IL
 37.81°N 89.23°W
Last Update:
8:47 pm CDT Aug 4, 2025
Forecast Valid:
9pm CDT Aug 4, 2025-6pm CDT Aug 11, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation