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.

Light Rain Fog/Mist

55°F

13°C

Humidity 90%
Wind Speed NW 13 mph
Barometer 30.11 in (1019.4 mb)
Dewpoint 52°F (11°C)
Visibility 6.00 mi
Wind Chill51°F (11°C)
Last update 16 Oct 4:52 am CDT
Extended Forecast for

4 Miles NNE Murphysboro IL

  • Overnight

    Overnight: A 20 percent chance of showers. Cloudy, with a steady temperature around 56. Northwest wind around 13 mph, with gusts as high as 29 mph.

    Low: 56 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 56. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 29 mph.

    High: 56 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. North wind 11 to 15 mph, with gusts as high as 22 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 60. North wind 7 to 9 mph.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy frost after 4am. Otherwise, clear, with a low around 34. Calm wind.

    Low: 34 °F

    Clear then
    Patchy Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 66. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 66 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 70. Light south wind.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers. Cloudy, with a steady temperature around 56. Northwest wind around 13 mph, with gusts as high as 29 mph.
Friday
Mostly cloudy, with a high near 56. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 29 mph.
Friday Night
Mostly cloudy, with a low around 40. North wind 11 to 15 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 60. North wind 7 to 9 mph.
Saturday Night
Patchy frost after 4am. Otherwise, clear, with a low around 34. Calm wind.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 66. Calm wind becoming south southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 39. Calm wind.
Monday
Sunny, with a high near 70. Light south wind.
Monday Night
Mostly clear, with a low around 41. Calm wind.
Tuesday
Sunny, with a high near 74. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 44. Calm wind.
Wednesday
Sunny, with a high near 77. Light and variable wind.
Wednesday Night
Clear, with a low around 46. Calm wind.
Thursday
Sunny, with a high near 79. Light and variable wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Murphysboro IL
 37.81°N 89.31°W
Last Update:
4:31 am CDT Oct 16, 2026
Forecast Valid:
5am CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
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