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

51°F

11°C

Humidity 80%
Wind Speed W 5 mph
Barometer 30.01 in (1016.1 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 5 Nov 10:52 pm CST
Extended Forecast for

Murphysboro IL

  • Tonight

    Tonight: Increasing clouds, with a low around 44. Northwest wind 3 to 7 mph.

    Low: 44 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 56. North northwest wind 7 to 11 mph.

    High: 56 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Patchy frost after 1am. Otherwise, clear, with a low around 30. North wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Clear then
    Patchy Frost

  • Saturday

    Saturday: Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 55. Light north northwest wind.

    High: 55 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Clear
    then Frost

  • Sunday

    Sunday: Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 61. Light and variable wind.

    High: 61 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 4am. Otherwise, clear, with a low around 33. Calm wind.

    Low: 33 °F

    Clear then
    Patchy Frost

  • Monday

    Monday: Areas of frost before 7am. Otherwise, sunny, with a high near 67. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 67 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 37. Light southwest wind.

    Low: 37 °F

    Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 44. Northwest wind 3 to 7 mph.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 56. North northwest wind 7 to 11 mph.
Friday Night
Patchy frost after 1am. Otherwise, clear, with a low around 30. North wind around 5 mph becoming calm in the evening.
Saturday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 55. Light north northwest wind.
Saturday Night
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 30. Calm wind.
Sunday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 61. Light and variable wind.
Sunday Night
Patchy frost after 4am. Otherwise, clear, with a low around 33. Calm wind.
Monday
Areas of frost before 7am. Otherwise, sunny, with a high near 67. Calm wind becoming south southwest around 6 mph in the afternoon.
Monday Night
Clear, with a low around 37. Light southwest wind.
Tuesday
Sunny, with a high near 68. Light west wind.
Tuesday Night
Clear, with a low around 37. Calm wind.
Veterans Day
Sunny, with a high near 65. Calm wind becoming northwest around 5 mph.
Wednesday Night
Mostly clear, with a low around 38. Calm wind.
Thursday
Sunny, with a high near 63. Calm wind becoming northwest 5 to 7 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Murphysboro IL
 37.75°N 89.34°W
Last Update:
10:16 pm CST Nov 5, 2026
Forecast Valid:
11pm CST Nov 5, 2026-6pm CST Nov 12, 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