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

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

67°F

19°C

Humidity 87%
Wind Speed Calm
Barometer 30.19 in (1021.8 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 3 Oct 10:52 pm CDT
Extended Forecast for

3 Miles SE De Soto IL

  • Tonight

    Tonight: Clear, with a low around 61. Calm wind.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming south southeast 5 to 8 mph in the afternoon.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57. Light south southeast wind.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 85. South wind 5 to 10 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65. South southeast wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 83. South southeast wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 83 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. Light south southeast wind.

    Low: 64 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 80. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 80 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly cloudy, with a low around 59. North northeast wind 6 to 8 mph.

    Low: 59 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 61. Calm wind.
Saturday
Sunny, with a high near 86. Calm wind becoming south southeast 5 to 8 mph in the afternoon.
Saturday Night
Clear, with a low around 57. Light south southeast wind.
Sunday
Sunny, with a high near 85. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 65. South southeast wind around 5 mph becoming calm in the evening.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 83. South southeast wind 3 to 6 mph. Chance of precipitation is 30%.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. Light south southeast wind.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. Calm wind becoming north northwest around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 59. North northeast wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 75. Northeast wind 8 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 53. East northeast wind 5 to 7 mph.
Thursday
Sunny, with a high near 74. East wind around 7 mph.
Thursday Night
Mostly clear, with a low around 51. Light east wind.
Friday
Sunny, with a high near 77. Calm wind becoming south southwest around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE De Soto IL
 37.79°N 89.2°W
Last Update:
11:01 pm CDT Oct 3, 2025
Forecast Valid:
11pm CDT Oct 3, 2025-6pm CDT Oct 10, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation