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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Cobden IL

Heat Advisory August 9, 12:00pm until August 12, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Patchy fog before 8am. Otherwise, sunny, with a high near 92. Light south wind increasing to 5 to 10 mph in the morning.

    High: 92 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 73. South wind 6 to 8 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96. Heat index values as high as 105. South southwest wind 7 to 9 mph.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South southwest wind around 8 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Southwest wind 7 to 9 mph.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. South southwest wind 7 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Southwest wind 6 to 9 mph.

    High: 95 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 74. South southwest wind around 7 mph.

    Low: 74 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 90. South southwest wind 5 to 7 mph.

    High: 90 °F

    Chance
    T-storms

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 92. Light south wind increasing to 5 to 10 mph in the morning.
Tonight
Mostly clear, with a low around 73. South wind 6 to 8 mph.
Monday
Sunny, with a high near 96. Heat index values as high as 105. South southwest wind 7 to 9 mph.
Monday Night
Mostly clear, with a low around 76. South southwest wind around 8 mph.
Tuesday
Sunny, with a high near 96. Southwest wind 7 to 9 mph.
Tuesday Night
Mostly clear, with a low around 77. South southwest wind 7 to 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Southwest wind 6 to 9 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. South southwest wind around 7 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. South southwest wind 5 to 7 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East southeast wind around 5 mph.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 88. East northeast wind 5 to 7 mph.
Friday Night
A chance of showers. Partly cloudy, with a low around 71. East southeast wind around 6 mph.
Saturday
A slight chance of showers. Partly sunny, with a high near 89. South wind 5 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cobden IL
 37.54°N 89.24°W
Last Update:
1:26 am CDT Aug 9, 2026
Forecast Valid:
5am CDT Aug 9, 2026-6pm CDT Aug 15, 2026
 
Forecast Discussion
 
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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