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

52°F

11°C

Humidity 88%
Wind Speed Calm
Barometer 30.16 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 6 Oct 8:47 am CDT
Extended Forecast for

Murphysboro IL

  • Today

    Today: Sunny, with a high near 78. Light southeast wind.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 51. Calm wind.

    Low: 51 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 57. South southwest wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Calm wind becoming northeast around 6 mph in the morning.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. Light northeast wind.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 54. Light east southeast wind.

    Low: 54 °F

    Clear

  • Saturday

    Saturday: A slight chance of showers after 1pm. Sunny, with a high near 82. Calm wind becoming south southeast 5 to 8 mph in the morning.

    High: 82 °F

    Sunny then
    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 78. Light southeast wind.
Tonight
Clear, with a low around 51. Calm wind.
Wednesday
Sunny, with a high near 85. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 57. South southwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 82. Calm wind becoming northeast around 6 mph in the morning.
Thursday Night
Mostly clear, with a low around 53. Light northeast wind.
Friday
Sunny, with a high near 80. Calm wind becoming east southeast around 6 mph in the afternoon.
Friday Night
Clear, with a low around 54. Light east southeast wind.
Saturday
A slight chance of showers after 1pm. Sunny, with a high near 82. Calm wind becoming south southeast 5 to 8 mph in the morning.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 59. Light east wind.
Sunday
A slight chance of showers. Mostly sunny, with a high near 76. Light and variable wind becoming north northeast 5 to 8 mph in the morning.
Sunday Night
Partly cloudy, with a low around 58. Calm wind.
Columbus Day
Mostly sunny, with a high near 83. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Murphysboro IL
 37.77°N 89.37°W
Last Update:
5:21 am CDT Oct 6, 2026
Forecast Valid:
9am CDT Oct 6, 2026-6pm CDT Oct 12, 2026
 
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