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.

Fair

61°F

16°C

Humidity 78%
Wind Speed Calm
Barometer 30.10 in (1019.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 10 Oct 9:52 am CDT
Extended Forecast for

De Soto IL

  • Today

    Today: Cloudy, with a high near 75. Southeast wind 3 to 7 mph.

    High: 75 °F

    Cloudy

  • Tonight

    Tonight: A 40 percent chance of showers, mainly before 10pm. Cloudy, with a low around 55. Northeast wind 5 to 8 mph.

    Low: 55 °F

    Chance
    Showers then
    Cloudy

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 83. West wind 3 to 6 mph.

    High: 83 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. Light south wind.

    Low: 60 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 90. Light southwest wind increasing to 8 to 13 mph in the morning.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 66. Southwest wind 7 to 9 mph.

    Low: 66 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90. West southwest wind 6 to 9 mph.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 1am. Mostly clear, with a low around 65. South southwest wind around 5 mph.

    Low: 65 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 82. East wind 6 to 8 mph.

    High: 82 °F

    Chance
    Showers

Detailed Forecast

Today
Cloudy, with a high near 75. Southeast wind 3 to 7 mph.
Tonight
A 40 percent chance of showers, mainly before 10pm. Cloudy, with a low around 55. Northeast wind 5 to 8 mph.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 83. West wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 60. Light south wind.
Columbus Day
Sunny, with a high near 90. Light southwest wind increasing to 8 to 13 mph in the morning.
Monday Night
Clear, with a low around 66. Southwest wind 7 to 9 mph.
Tuesday
Sunny, with a high near 90. West southwest wind 6 to 9 mph.
Tuesday Night
A slight chance of showers after 1am. Mostly clear, with a low around 65. South southwest wind around 5 mph.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 82. East wind 6 to 8 mph.
Wednesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 60. East southeast wind around 6 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. Southeast wind 7 to 10 mph becoming southwest in the afternoon.
Thursday Night
A chance of showers. Partly cloudy, with a low around 55. Southwest wind 3 to 7 mph.
Friday
A slight chance of showers. Partly sunny, with a high near 72. Northwest wind 7 to 13 mph, with gusts as high as 18 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:
8:01 am CDT Oct 10, 2026
Forecast Valid:
10am CDT Oct 10, 2026-6pm CDT Oct 16, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation