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

64°F

18°C

Humidity 93%
Wind Speed Calm
Barometer 30.18 in (1021.7 mb)
Dewpoint 62°F (17°C)
Visibility 9.00 mi
Last update 3 Oct 11:52 pm CDT
Extended Forecast for

Murphysboro IL

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, clear, with a low around 60. Calm wind.

    Low: 60 °F

    Patchy Fog

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming south southeast 5 to 8 mph in the morning.

    High: 86 °F

    Sunny

  • Saturday Night

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

    Low: 58 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 85. Light south southeast wind becoming south 5 to 10 mph in the morning.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. South southeast wind around 6 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 83. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 30%.

    High: 83 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. Light southeast wind.

    Low: 64 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 81. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 81 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly cloudy, with a low around 58. North wind around 7 mph.

    Low: 58 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, clear, with a low around 60. Calm wind.
Saturday
Sunny, with a high near 86. Calm wind becoming south southeast 5 to 8 mph in the morning.
Saturday Night
Clear, with a low around 58. Light south southeast wind.
Sunday
Sunny, with a high near 85. Light south southeast wind becoming south 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 64. South southeast wind around 6 mph becoming calm in the evening.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 83. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 30%.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. Light southeast wind.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Calm wind becoming north northwest around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 58. North wind around 7 mph.
Wednesday
Mostly sunny, with a high near 75. Northeast wind 8 to 10 mph.
Wednesday Night
Mostly clear, with a low around 53. Northeast wind 5 to 7 mph.
Thursday
Sunny, with a high near 75. East wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 51. Light east wind.
Friday
Sunny, with a high near 78. Calm wind becoming south southwest around 6 mph in the afternoon.
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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:
11:01 pm CDT Oct 3, 2025
Forecast Valid:
12am CDT Oct 4, 2025-6pm CDT Oct 10, 2025
 
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Additional Resources

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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