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

45°F

7°C

Humidity 49%
Wind Speed E 5 mph
Barometer 30.38 in (1029.1 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 28 Mar 8:52 pm CDT
Extended Forecast for

Murphysboro IL

  • Tonight

    Tonight: Mostly clear, with a low around 39. South southeast wind 3 to 5 mph.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 70. South southwest wind 6 to 15 mph, with gusts as high as 26 mph.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. South wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79. South southwest wind 13 to 18 mph, with gusts as high as 28 mph.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Breezy, with a south southwest wind 16 to 20 mph, with gusts as high as 31 mph.

    High: 83 °F

    Breezy.
    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 50. South southwest wind 13 to 16 mph becoming north northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.

    Low: 50 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely. Mostly cloudy, with a high near 59. North northeast wind 11 to 13 mph, with gusts as high as 21 mph.

    High: 59 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 46. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 39. South southeast wind 3 to 5 mph.
Sunday
Mostly sunny, with a high near 70. South southwest wind 6 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 56. South wind 10 to 13 mph, with gusts as high as 24 mph.
Monday
Mostly sunny, with a high near 79. South southwest wind 13 to 18 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 65. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Breezy, with a south southwest wind 16 to 20 mph, with gusts as high as 31 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 50. South southwest wind 13 to 16 mph becoming north northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Wednesday
Showers likely. Mostly cloudy, with a high near 59. North northeast wind 11 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 46. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Thursday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 64. East wind 10 to 13 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 48. East northeast wind 7 to 9 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 72. East wind 7 to 9 mph becoming south southeast in the afternoon.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. South wind 8 to 11 mph, with gusts as high as 20 mph.
Saturday
Showers likely. Mostly cloudy, with a high near 71. South wind 13 to 15 mph, with gusts as high as 23 mph.
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 89.34°W
Last Update:
5:51 pm CDT Mar 28, 2026
Forecast Valid:
9pm CDT Mar 28, 2026-6pm CDT Apr 4, 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