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.

Rain Fog/Mist

59°F

15°C

Humidity 87%
Wind Speed NW 15 G 22 mph
Barometer 30.05 in (1017.4 mb)
Dewpoint 55°F (13°C)
Visibility 4.00 mi
Last update 16 Oct 2:52 am CDT
Extended Forecast for

5 Miles S Pinckneyville IL

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 47. Northwest wind around 16 mph, with gusts as high as 31 mph.

    Low: 47 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 55. Northwest wind 14 to 18 mph, with gusts as high as 29 mph.

    High: 55 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North wind 10 to 16 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 61. North northeast wind 7 to 9 mph.

    High: 61 °F

    Sunny

  • Saturday Night

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

    Low: 33 °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 37. Calm wind.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 71. Calm wind becoming south around 5 mph in the afternoon.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 47. Northwest wind around 16 mph, with gusts as high as 31 mph.
Friday
Mostly cloudy, with a high near 55. Northwest wind 14 to 18 mph, with gusts as high as 29 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North wind 10 to 16 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 61. North northeast wind 7 to 9 mph.
Saturday Night
Patchy frost after 4am. Otherwise, clear, with a low around 33. 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 37. Calm wind.
Monday
Sunny, with a high near 71. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 40. Calm wind.
Tuesday
Sunny, with a high near 76. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 43. Calm wind.
Wednesday
Sunny, with a high near 78. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 45. Calm wind.
Thursday
Sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Pinckneyville IL
 37.99°N 89.38°W
Last Update:
2:01 am CDT Oct 16, 2026
Forecast Valid:
3am CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
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Additional Resources

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