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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

3 Miles NE Gorham IL

Heat Advisory September 9, 11:00am until September 9, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 78. Calm wind becoming south around 6 mph after midnight.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 98. Heat index values as high as 107. South wind 7 to 10 mph becoming northwest in the afternoon.

    High: 98 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 71. Light and variable wind. Chance of precipitation is 80%.

    Low: 71 °F

    Chance
    T-storms then
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 85. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 90%.

    High: 85 °F

    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 88. Calm wind.

    High: 88 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers after 1pm. Sunny, with a high near 93. Calm wind becoming south southwest around 6 mph in the morning.

    High: 93 °F

    Sunny then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers. Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a steady temperature around 78. Calm wind becoming south around 6 mph after midnight.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 98. Heat index values as high as 107. South wind 7 to 10 mph becoming northwest in the afternoon.
Wednesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 71. Light and variable wind. Chance of precipitation is 80%.
Thursday
Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 85. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 90%.
Thursday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 65. Calm wind.
Friday
Mostly sunny, with a high near 88. Calm wind.
Friday Night
Mostly clear, with a low around 66. Calm wind.
Saturday
A slight chance of showers after 1pm. Sunny, with a high near 93. Calm wind becoming south southwest around 6 mph in the morning.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 68. Calm wind.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 92. Calm wind becoming southwest 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 67. North wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 92. Light south southeast wind becoming south southwest 5 to 9 mph in the morning.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 68. South wind around 6 mph.
Tuesday
A chance of showers and thunderstorms. Sunny, with a high near 90. South southwest wind 5 to 8 mph becoming west northwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Gorham IL
 37.73°N 89.46°W
Last Update:
11:06 pm CDT Sep 8, 2026
Forecast Valid:
11pm CDT Sep 8, 2026-6pm CDT Sep 15, 2026
 
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Additional Resources

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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