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 July 26, 07:00pm until July 28, 07:00pm
Extreme Heat Warning July 26, 11:00am until July 26, 07:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 75. Calm wind.

    Low: 75 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms between 10am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 95. Heat index values as high as 112. Light and variable wind. Chance of precipitation is 20%.

    High: 95 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. Light southwest wind.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 98. Heat index values as high as 113. Southwest wind 3 to 8 mph.

    High: 98 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 78. Southwest wind around 7 mph.

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Northwest wind 5 to 8 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 72. North wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 89. North northeast wind 3 to 7 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. North northeast wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 75. Calm wind.
Sunday
A slight chance of showers and thunderstorms between 10am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 95. Heat index values as high as 112. Light and variable wind. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 77. Light southwest wind.
Monday
Sunny and hot, with a high near 98. Heat index values as high as 113. Southwest wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 78. Southwest wind around 7 mph.
Tuesday
Sunny, with a high near 95. Northwest wind 5 to 8 mph.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 72. North wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 89. North northeast wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 66. North northeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 89. Calm wind becoming east northeast around 5 mph in the afternoon.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 68. Calm wind.
Friday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Calm wind.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Calm wind becoming north northeast 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cobden IL
 37.52°N 89.24°W
Last Update:
2:26 am CDT Jul 26, 2026
Forecast Valid:
2am CDT Jul 26, 2026-6pm CDT Aug 1, 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