Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

84°F

29°C

Humidity 66%
Wind Speed SW 5 mph
Barometer 30.08 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 2 Sep 8:47 am CDT
Extended Forecast for

Crainville IL

Extreme Heat Warning September 2, 08:51am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 2, 08:51am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Today

    High: 99 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 76. South wind around 5 mph becoming calm  in the evening.

    Low: 76 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. Light south wind.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. Light and variable wind.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. Calm wind.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny and hot, with a high near 98. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 98 °F

    Sunny then
    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 99. Heat index values as high as 106. Calm wind becoming south southwest 5 to 7 mph in the morning.
Tonight
Clear, with a low around 76. South wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 76. Light south wind.
Friday
Sunny and hot, with a high near 99. Light and variable wind.
Friday Night
Mostly clear, with a low around 76. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 98. Calm wind becoming west northwest around 5 mph in the afternoon.
Saturday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 72. Calm wind.
Sunday
Sunny, with a high near 95. Calm wind becoming north northeast 5 to 7 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 70. East northeast wind around 6 mph becoming calm in the evening.
Labor Day
Sunny, with a high near 94. Calm wind becoming east northeast around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 70. North northeast wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 94. Calm wind becoming south 5 to 7 mph in the morning.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Crainville IL
 37.76°N 89.06°W
7:51 am CDT Sep 2, 2026
8am CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

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