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.

A Few Clouds

87°F

31°C

Humidity 70%
Wind Speed SE 5 mph
Barometer 29.93 in (1013.0 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 15 Jul 4:52 pm CDT
Extended Forecast for

De Soto IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely. Partly sunny, with a high near 89. South southwest wind around 7 mph. Chance of precipitation is 60%.

    High: 89 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 73. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Southwest wind 5 to 9 mph. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 75. South southwest wind 3 to 6 mph.

    Low: 75 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Southwest wind 5 to 8 mph.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. North northwest wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 87. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 87 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Light and variable wind.

    Low: 74 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89. Southwest wind 5 to 8 mph.

    High: 89 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely. Partly sunny, with a high near 89. South southwest wind around 7 mph. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 73. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Southwest wind 5 to 9 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 75. South southwest wind 3 to 6 mph.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Southwest wind 5 to 8 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. North northwest wind around 5 mph becoming calm in the evening.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 87. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Light and variable wind.
Saturday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89. Southwest wind 5 to 8 mph.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. South wind around 6 mph.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southwest wind 5 to 7 mph.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. South wind around 6 mph becoming light and variable in the evening.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. South 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:
4:31 pm CDT Jul 15, 2025
Forecast Valid:
4pm CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
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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