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

47°F

8°C

Humidity 66%
Wind Speed Calm
Barometer 30.14 in (1020.5 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 25 Mar 2:52 am CDT
Extended Forecast for

Murphysboro IL

  • Overnight

    Overnight: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75. Light and variable wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 18 mph.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. South wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. South southwest wind 13 to 17 mph, with gusts as high as 25 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 45. South southwest wind 11 to 15 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.

    Low: 45 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 54. North wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    High: 54 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 34. North northeast wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 59. Light and variable wind becoming east northeast around 6 mph in the morning.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. Southeast wind 3 to 5 mph.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 44. Calm wind.
Wednesday
Mostly sunny, with a high near 75. Light and variable wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 63. South wind 9 to 13 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 86. South southwest wind 13 to 17 mph, with gusts as high as 25 mph.
Thursday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 45. South southwest wind 11 to 15 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 54. North wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Friday Night
Mostly clear, with a low around 34. North northeast wind 6 to 11 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 59. Light and variable wind becoming east northeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 40. Southeast wind 3 to 5 mph.
Sunday
Partly sunny, with a high near 65. South wind 5 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 54. South wind 7 to 10 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 79. South southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 62. South wind around 11 mph, with gusts as high as 21 mph.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. South southwest wind 11 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:
1:26 am CDT Mar 25, 2026
Forecast Valid:
3am CDT Mar 25, 2026-6pm CDT Mar 31, 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