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

65°F

18°C

Humidity 45%
Wind Speed NW 13 G 22 mph
Barometer 30.07 in (1018.2 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 22 May 10:52 am CDT
Extended Forecast for

De Soto IL

  • Today

    Today: Sunny, with a high near 71. West northwest wind around 16 mph, with gusts as high as 25 mph.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. North northwest wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 70. Calm wind becoming northwest around 5 mph.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers. Mostly cloudy, with a high near 69. Calm wind becoming east southeast around 6 mph in the morning.

    High: 69 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers, mainly after 1am. Low around 56. East wind 5 to 7 mph. Chance of precipitation is 80%.

    Low: 56 °F

    Chance
    Showers then
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 65. East wind around 10 mph. Chance of precipitation is 90%.

    High: 65 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 56. East northeast wind 7 to 9 mph.

    Low: 56 °F

    Showers

  • Memorial Day

    Memorial Day: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. East wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 69 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 71. West northwest wind around 16 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 47. North northwest wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 70. Calm wind becoming northwest around 5 mph.
Friday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 53. Calm wind.
Saturday
A 30 percent chance of showers. Mostly cloudy, with a high near 69. Calm wind becoming east southeast around 6 mph in the morning.
Saturday Night
Showers, mainly after 1am. Low around 56. East wind 5 to 7 mph. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm. High near 65. East wind around 10 mph. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 56. East northeast wind 7 to 9 mph.
Memorial Day
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. East wind 8 to 11 mph, with gusts as high as 18 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. North northeast wind 6 to 8 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 70. North northwest wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 52. North northwest wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 74. North northwest wind 5 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
De Soto IL
 37.81°N 89.23°W
Last Update:
11:18 am CDT May 22, 2025
Forecast Valid:
11am CDT May 22, 2025-6pm CDT May 28, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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