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

19°F

-7°C

Humidity 77%
Wind Speed Calm
Barometer 30.28 in (1026.0 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Last update 29 Jan 12:52 am CST
Extended Forecast for

Murphysboro IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 18. Light east northeast wind.

    Low: 18 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 29. Northeast wind 3 to 7 mph.

    High: 29 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Cloudy, with a low around 12. Northeast wind around 6 mph.

    Low: 12 °F

    Slight Chance
    Snow

  • Friday

    Friday: Partly sunny, with a high near 21. North wind 6 to 10 mph.

    High: 21 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 5. North northwest wind around 10 mph.

    Low: 5 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 16. North northwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 16 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 3. Northwest wind 3 to 7 mph.

    Low: 3 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 25. Light and variable wind becoming west southwest 5 to 7 mph in the morning.

    High: 25 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 13. South southwest wind around 6 mph.

    Low: 13 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 18. Light east northeast wind.
Thursday
Mostly cloudy, with a high near 29. Northeast wind 3 to 7 mph.
Thursday Night
A 20 percent chance of snow. Cloudy, with a low around 12. Northeast wind around 6 mph.
Friday
Partly sunny, with a high near 21. North wind 6 to 10 mph.
Friday Night
Mostly cloudy, with a low around 5. North northwest wind around 10 mph.
Saturday
Mostly sunny, with a high near 16. North northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 3. Northwest wind 3 to 7 mph.
Sunday
Mostly sunny, with a high near 25. Light and variable wind becoming west southwest 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 13. South southwest wind around 6 mph.
Monday
Mostly sunny, with a high near 34. West southwest wind 5 to 7 mph.
Monday Night
Partly cloudy, with a low around 21. Light southwest wind.
Tuesday
Mostly cloudy, with a high near 37. South southwest wind 3 to 6 mph.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 27. South wind around 6 mph.
Wednesday
A chance of showers. Mostly cloudy, with a high near 37. South wind around 7 mph becoming west in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Murphysboro IL
 37.77°N 89.34°W
Last Update:
10:51 pm CST Jan 28, 2026
Forecast Valid:
1am CST Jan 29, 2026-6pm CST Feb 4, 2026
 
Forecast Discussion
 
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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