National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

47°F

8°C

Humidity 86%
Wind Speed Calm
Barometer 30.12 in (1020.1 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 2 May 9:52 pm CDT
Extended Forecast for

4 Miles SE Pinckneyville IL

  • Tonight

    Tonight: Clear, with a low around 38. Light south southwest wind.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 71. South southwest wind 5 to 15 mph, with gusts as high as 23 mph.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 54. South southwest wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 80. Southwest wind 8 to 15 mph, with gusts as high as 22 mph.

    High: 80 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 59. South southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 70. South southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    High: 70 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 47. West wind 8 to 15 mph becoming north after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

    Low: 47 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 60. North northeast wind around 8 mph.

    High: 60 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers, mainly before 1am. Mostly cloudy, with a low around 44. North northeast wind 7 to 9 mph.

    Low: 44 °F

    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 38. Light south southwest wind.
Sunday
Sunny, with a high near 71. South southwest wind 5 to 15 mph, with gusts as high as 23 mph.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 54. South southwest wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 80. Southwest wind 8 to 15 mph, with gusts as high as 22 mph.
Monday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 59. South southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Tuesday
Showers and possibly a thunderstorm. High near 70. South southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 47. West wind 8 to 15 mph becoming north after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 60. North northeast wind around 8 mph.
Wednesday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 44. North northeast wind 7 to 9 mph.
Thursday
Mostly sunny, with a high near 65. Northwest wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 45. West wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 72. South southwest wind 5 to 10 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 53. South wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 78. West southwest wind 5 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Pinckneyville IL
 38.04°N 89.33°W
Last Update:
9:01 pm CDT May 2, 2026
Forecast Valid:
10pm CDT May 2, 2026-6pm CDT May 9, 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