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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

79°F

26°C

Humidity 84%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 2 Sep 7:53 am CDT
Extended Forecast for

3 Miles SSE Ava IL

Extreme Heat Warning September 2, 08:35am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 2, 08:35am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Today

    High: 98 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 74. Light south wind.

    Low: 74 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 75. Calm wind.

    Low: 75 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 97. Calm wind.

    High: 97 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96. Calm wind.

    High: 96 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 98. Heat index values as high as 105. Calm wind becoming south southwest around 6 mph in the morning.
Tonight
Clear, with a low around 74. Light south wind.
Thursday
Sunny and hot, with a high near 97. Calm wind becoming south southwest around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 75. Calm wind.
Friday
Sunny and hot, with a high near 97. Calm wind.
Friday Night
Mostly clear, with a low around 74. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96. Calm wind.
Saturday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 72. Calm wind.
Sunday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Calm wind becoming north northeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 70. Light east wind.
Labor Day
Sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 70. Light and variable wind.
Tuesday
Mostly sunny, with a high near 92. Calm wind becoming south around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Ava IL
 37.84°N 89.48°W
Last Update:
7:51 am CDT Sep 2, 2026
Forecast Valid:
8am CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
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