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.

Mostly Cloudy

39°F

4°C

Humidity 53%
Wind Speed NW 8 mph
Barometer 30.21 in (1023.4 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 21 Feb 1:52 pm CST
Extended Forecast for

6 Miles SSE Pinckneyville IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 41. Northwest wind 6 to 8 mph.

    High: 41 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 23. Northwest wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 33. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 29 mph.

    High: 33 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. North northwest wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 33. North northwest wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Northwest wind around 5 mph becoming calm.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 50. South southwest wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 59. West southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 59 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 41. Northwest wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 23. Northwest wind 7 to 14 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 33. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 29 mph.
Sunday Night
Partly cloudy, with a low around 17. North northwest wind 13 to 15 mph, with gusts as high as 24 mph.
Monday
Sunny, with a high near 33. North northwest wind 7 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 18. Northwest wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 50. South southwest wind 6 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 42. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy, with a high near 59. West southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
A chance of showers, mainly after midnight. Mostly cloudy, with a low around 37. Southwest wind around 9 mph becoming north in the evening.
Thursday
A chance of showers. Mostly sunny, with a high near 52. Northwest wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 29. Northwest wind around 6 mph becoming south southwest after midnight.
Friday
Sunny, with a high near 57. South southwest wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE Pinckneyville IL
 37.99°N 89.36°W
Last Update:
1:42 pm CST Feb 21, 2026
Forecast Valid:
2pm CST Feb 21, 2026-6pm CST Feb 27, 2026
 
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