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

82°F

28°C

Humidity 28%
Wind Speed S 7 mph
Barometer 30.01 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 29 Sep 12:50 pm CDT
Extended Forecast for

Bush ILSimilar City Names

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. South wind around 5 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 59. Light south southeast wind.

    Low: 59 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 90. South southwest wind 5 to 10 mph.

    High: 90 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 70. South wind 5 to 8 mph.

    Low: 70 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 90. South southwest wind 8 to 14 mph, with gusts as high as 20 mph.

    High: 90 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 68. South wind 3 to 5 mph.

    Low: 68 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 75. Southwest wind 5 to 9 mph becoming north in the afternoon. Chance of precipitation is 90%.

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 58. North northeast wind 7 to 9 mph.

    Low: 58 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Mostly cloudy, with a high near 70. Northeast wind around 8 mph.

    High: 70 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 84. South wind around 5 mph.
Tonight
Increasing clouds, with a low around 59. Light south southeast wind.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 90. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 70. South wind 5 to 8 mph.
Thursday
Partly sunny, with a high near 90. South southwest wind 8 to 14 mph, with gusts as high as 20 mph.
Thursday Night
A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 68. South wind 3 to 5 mph.
Friday
Showers and possibly a thunderstorm. High near 75. Southwest wind 5 to 9 mph becoming north in the afternoon. Chance of precipitation is 90%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 58. North northeast wind 7 to 9 mph.
Saturday
A chance of showers. Mostly cloudy, with a high near 70. Northeast wind around 8 mph.
Saturday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 72. Light north wind increasing to 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 51. North wind 3 to 5 mph.
Monday
Sunny, with a high near 70. Northeast wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bush ILSimilar City Names
 37.85°N 89.14°W
Last Update:
1:27 pm CDT Sep 29, 2026
Forecast Valid:
1pm CDT Sep 29, 2026-6pm CDT Oct 5, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation