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.

Light Rain Fog/Mist

49°F

9°C

Humidity 97%
Wind Speed N 9 mph
Barometer 29.85 in (1010.8 mb)
Dewpoint 48°F (9°C)
Visibility 3.00 mi
Wind Chill45°F (7°C)
Last update 5 May 9:52 pm CDT
Extended Forecast for

De Soto IL

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 3am, then a chance of showers between 3am and 4am. Low around 47. North wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.

    Low: 47 °F

    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers after 3pm. Mostly cloudy, with a high near 62. North northeast wind 8 to 10 mph.

    High: 62 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. North northeast wind 5 to 8 mph becoming calm after midnight.

    Low: 43 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 65. North wind 3 to 8 mph.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 44. Light and variable wind.

    Low: 44 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 73. South southwest wind 6 to 13 mph, with gusts as high as 18 mph.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Partly cloudy, with a low around 53. South southwest wind 5 to 9 mph becoming light west southwest after midnight. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely

  • Saturday

    Saturday: Sunny, with a high near 79. Southwest wind 3 to 5 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms after 1am. Mostly clear, with a low around 58. South wind 3 to 5 mph.

    Low: 58 °F

    Mostly Clear
    then Chance
    T-storms

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before 3am, then a chance of showers between 3am and 4am. Low around 47. North wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.
Wednesday
A 20 percent chance of showers after 3pm. Mostly cloudy, with a high near 62. North northeast wind 8 to 10 mph.
Wednesday Night
A 20 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. North northeast wind 5 to 8 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 65. North wind 3 to 8 mph.
Thursday Night
Clear, with a low around 44. Light and variable wind.
Friday
Sunny, with a high near 73. South southwest wind 6 to 13 mph, with gusts as high as 18 mph.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Partly cloudy, with a low around 53. South southwest wind 5 to 9 mph becoming light west southwest after midnight. Chance of precipitation is 60%.
Saturday
Sunny, with a high near 79. Southwest wind 3 to 5 mph.
Saturday Night
A chance of showers and thunderstorms after 1am. Mostly clear, with a low around 58. South wind 3 to 5 mph.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. South southwest wind 6 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 51. North wind 6 to 11 mph.
Monday
Sunny, with a high near 72. North northwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 50. North wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 78. Light south wind becoming south southwest 5 to 10 mph in the morning.
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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:
9:56 pm CDT May 5, 2026
Forecast Valid:
10pm CDT May 5, 2026-6pm CDT May 12, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation