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

55°F

13°C

Humidity 100%
Wind Speed Calm
Barometer 30.24 in (1024.0 mb)
Dewpoint 55°F (13°C)
Visibility 7.00 mi
Last update 14 Oct 7:52 am CDT
Extended Forecast for

Coello IL

  • Today

    Today: Sunny, with a high near 83. Calm wind becoming east northeast 5 to 7 mph in the afternoon.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 55. East northeast wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 57. East wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 80. East southeast wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. East southeast wind around 7 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 84. South wind 5 to 10 mph.

    High: 84 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. South wind around 8 mph.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 78. Southwest wind 10 to 14 mph, with gusts as high as 20 mph.

    High: 78 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 83. Calm wind becoming east northeast 5 to 7 mph in the afternoon.
Tonight
Clear, with a low around 55. East northeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 84. Calm wind becoming east northeast around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 57. East wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 80. East southeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 56. East southeast wind around 7 mph.
Friday
Partly sunny, with a high near 84. South wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 63. South wind around 8 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 78. Southwest wind 10 to 14 mph, with gusts as high as 20 mph.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 52. South southwest wind 7 to 10 mph becoming west after midnight.
Sunday
A slight chance of showers. Sunny, with a high near 70. West northwest wind 9 to 16 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 43. West northwest wind 5 to 9 mph becoming light west.
Monday
Sunny, with a high near 73. South southwest wind 5 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Coello IL
 38.03°N 89.1°W
Last Update:
7:16 am CDT Oct 14, 2025
Forecast Valid:
8am CDT Oct 14, 2025-6pm CDT Oct 20, 2025
 
Forecast Discussion
 
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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