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.

Partly Cloudy and Breezy

56°F

13°C

Humidity 77%
Wind Speed S 21 G 38 mph
Barometer 29.82 in (1009.8 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 17 Feb 6:52 pm CST
Extended Forecast for

Murphysboro IL

  • Tonight

    Tonight: A slight chance of showers between 1am and 4am. Cloudy, with a temperature rising to around 60 by 5am. Breezy, with a south wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    Low: 56 °F⇑

    Breezy.
    Cloudy then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 73. Southwest wind 8 to 16 mph, with gusts as high as 29 mph.

    High: 73 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after midnight. Partly cloudy, with a low around 55. South wind around 7 mph.

    Low: 55 °F

    Mostly Clear
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely, mainly after noon. Partly sunny, with a high near 71. South wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. South southwest wind around 11 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34. North wind 3 to 6 mph.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly after noon. Mostly sunny, with a high near 47. North northeast wind 6 to 9 mph.

    High: 47 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of rain and snow showers before midnight, then a slight chance of snow showers. Partly cloudy, with a low around 28. North northwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Tonight
A slight chance of showers between 1am and 4am. Cloudy, with a temperature rising to around 60 by 5am. Breezy, with a south wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 73. Southwest wind 8 to 16 mph, with gusts as high as 29 mph.
Wednesday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 55. South wind around 7 mph.
Thursday
Showers likely, mainly after noon. Partly sunny, with a high near 71. South wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Thursday Night
Mostly clear, with a low around 42. South southwest wind around 11 mph becoming west after midnight. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 54. West wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 34. North wind 3 to 6 mph.
Saturday
A chance of showers, mainly after noon. Mostly sunny, with a high near 47. North northeast wind 6 to 9 mph.
Saturday Night
A chance of rain and snow showers before midnight, then a slight chance of snow showers. Partly cloudy, with a low around 28. North northwest wind 9 to 11 mph, with gusts as high as 20 mph.
Sunday
A slight chance of rain and snow showers before noon. Mostly sunny, with a high near 40. Northwest wind 11 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 21. North northwest wind 7 to 10 mph.
Monday
Sunny, with a high near 39. North northwest wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 21. Light and variable wind.
Tuesday
Mostly sunny, with a high near 46. South wind 5 to 10 mph, with gusts as high as 18 mph.
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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:
5:46 pm CST Feb 17, 2026
Forecast Valid:
7pm CST Feb 17, 2026-6pm CST Feb 24, 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