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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

73°F

23°C

Humidity 96%
Wind Speed SE 3 mph
Barometer 30.08 in (1018.1 mb)
Dewpoint 72°F (22°C)
Visibility 9.00 mi
Last update 3 Jul 2:52 am CDT
Extended Forecast for

Murphysboro IL

Heat Advisory July 3, 08:00pm until July 4, 08:00pm
Extreme Heat Warning July 3, 03:20am until July 3, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning
  •  
    Extreme Heat Warning July 3, 03:20am until July 3, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • Overnight

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 95. Heat index values as high as 107. Calm wind becoming south around 6 mph in the afternoon.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Light and variable wind.

    Low: 75 °F

    Mostly Clear

  • Independence Day

    Independence Day: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Light south southwest wind. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Light west northwest wind.

    High: 92 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 90. Light northwest wind.

    High: 90 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 75. Calm wind.
Friday
Sunny, with a high near 95. Heat index values as high as 107. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 75. Light and variable wind.
Independence Day
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Light south southwest wind. Chance of precipitation is 30%.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Light west northwest wind.
Sunday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 40%.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 90. Light northwest wind.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Light north wind.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 89. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 71. Light north wind.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Calm wind.
Wednesday Night
Partly cloudy, with a low around 72. Calm wind.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Calm wind becoming south southwest around 6 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Murphysboro IL
 37.77°N 89.31°W
Last Update:
2:16 am CDT Jul 3, 2026
Forecast Valid:
3am CDT Jul 3, 2026-6pm CDT Jul 9, 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