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.

A Few Clouds

86°F

30°C

Humidity 66%
Wind Speed NW 10 G 21 mph
Barometer 30.02 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 22 Aug 11:52 am CDT
Extended Forecast for

4 Miles SSW Pinckneyville IL

  • Today

    Today: Sunny, with a high near 85. North northwest wind 8 to 10 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, clear, with a low around 63. Light north wind.

    Low: 63 °F

    Clear then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, sunny, with a high near 84. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy during the early evening, then becoming clear, with a low around 61. Calm wind.

    Low: 61 °F

    Clear

  • Monday

    Monday: Mostly sunny, with a high near 83. Light southeast wind.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Light east wind.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: Partly sunny, with a high near 85. East southeast wind 3 to 5 mph.

    High: 85 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65. Light east wind.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. Light and variable wind.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 85. North northwest wind 8 to 10 mph.
Tonight
Patchy fog after 3am. Otherwise, clear, with a low around 63. Light north wind.
Sunday
Patchy fog before 9am. Otherwise, sunny, with a high near 84. Calm wind becoming north northwest around 5 mph in the afternoon.
Sunday Night
Mostly cloudy during the early evening, then becoming clear, with a low around 61. Calm wind.
Monday
Mostly sunny, with a high near 83. Light southeast wind.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Light east wind.
Tuesday
Partly sunny, with a high near 85. East southeast wind 3 to 5 mph.
Tuesday Night
Partly cloudy, with a low around 65. Light east wind.
Wednesday
Mostly sunny, with a high near 88. Light and variable wind.
Wednesday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65. Calm wind.
Thursday
Sunny, with a high near 89. Calm wind becoming north northwest around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 65. Calm wind.
Friday
Sunny, with a high near 89. Calm wind becoming north around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Pinckneyville IL
 38.02°N 89.41°W
Last Update:
11:01 am CDT Aug 22, 2026
Forecast Valid:
11am CDT Aug 22, 2026-6pm CDT Aug 28, 2026
 
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Additional Resources

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Chance of Precipitation