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.

Fog/Mist

59°F

15°C

Humidity 100%
Wind Speed Calm
Barometer 30.10 in (1019.0 mb)
Dewpoint 59°F (15°C)
Visibility 6.00 mi
Last update 30 Sep 3:52 am CDT
Extended Forecast for

Murphysboro IL

  • Today

    Today: Sunny, with a high near 89. Calm wind becoming northeast 5 to 7 mph in the afternoon.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. East northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 62. East wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 87. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86. Calm wind becoming south southwest around 6 mph in the morning.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 58. Light south wind.

    Low: 58 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the morning.

    High: 84 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 89. Calm wind becoming northeast 5 to 7 mph in the afternoon.
Tonight
Partly cloudy, with a low around 59. East northeast wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 87. Calm wind becoming east 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 62. East wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 87. Calm wind becoming south southeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 62. Calm wind.
Friday
Sunny, with a high near 86. Calm wind becoming south southwest around 6 mph in the morning.
Friday Night
Clear, with a low around 58. Light south wind.
Saturday
Sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
Clear, with a low around 58. South southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 84. South wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 61. South southeast wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 84. Calm wind becoming south southeast 5 to 7 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Murphysboro IL
 37.77°N 89.34°W
Last Update:
3:31 am CDT Sep 30, 2025
Forecast Valid:
4am CDT Sep 30, 2025-6pm CDT Oct 6, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation