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

70°F

21°C

Humidity 79%
Wind Speed S 13 mph
Barometer 29.98 in (1014.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 14 Apr 7:52 am CDT
Extended Forecast for

Murphysboro IL

  • Today

    Today: Mostly sunny, with a high near 86. South southwest wind 15 to 18 mph, with gusts as high as 26 mph.

    High: 86 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers before 2am, then a slight chance of showers after 3am. Partly cloudy, with a low around 69. South southwest wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. South southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. South southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 80. South southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 80 °F

    Showers then
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 60. South southwest wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. South wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 62. South wind around 11 mph, with gusts as high as 21 mph.

    Low: 62 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 75. South southwest wind 13 to 15 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

    High: 75 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 86. South southwest wind 15 to 18 mph, with gusts as high as 26 mph.
Tonight
A slight chance of showers before 2am, then a slight chance of showers after 3am. Partly cloudy, with a low around 69. South southwest wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. South southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. South southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 80. South southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 60. South southwest wind 3 to 7 mph. Chance of precipitation is 30%.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. South wind 5 to 11 mph, with gusts as high as 21 mph.
Friday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 62. South wind around 11 mph, with gusts as high as 21 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 75. South southwest wind 13 to 15 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 42. West northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 68. West northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Mostly clear, with a low around 42. Northwest wind 5 to 8 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 70. East southeast wind 3 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Murphysboro IL
 37.77°N 89.34°W
Last Update:
4:46 am CDT Apr 14, 2026
Forecast Valid:
8am CDT Apr 14, 2026-6pm CDT Apr 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation