National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

82°F

28°C

Humidity 84%
Wind Speed S 3 mph
Barometer 29.96 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 11 Aug 9:35 pm CDT
Extended Forecast for

2 Miles SSE Crainville IL

Heat Advisory August 11, 09:50pm until August 13, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 11, 09:50pm until August 13, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Tonight

    Low: 77 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 94. Heat index values as high as 105. South southwest wind 5 to 8 mph.

    High: 94 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 78. South southwest wind around 6 mph.

    Low: 78 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 95. Heat index values as high as 105. Southwest wind 6 to 8 mph.

    High: 95 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 78. South southwest wind around 6 mph.

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 95. Southwest wind 3 to 5 mph.

    High: 95 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 97. South southwest wind 3 to 6 mph.

    High: 97 °F

    Hot

Detailed Forecast

Tonight
Partly cloudy, with a low around 77. South southwest wind 3 to 7 mph.
Wednesday
Mostly sunny, with a high near 94. Heat index values as high as 105. South southwest wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 78. South southwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 95. Heat index values as high as 105. Southwest wind 6 to 8 mph.
Thursday Night
Partly cloudy, with a low around 78. South southwest wind around 6 mph.
Friday
Mostly sunny, with a high near 95. Southwest wind 3 to 5 mph.
Friday Night
Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny and hot, with a high near 97. South southwest wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 77. South wind around 6 mph.
Sunday
Sunny and hot, with a high near 98. West wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 76. West northwest wind around 5 mph becoming calm in the evening.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Calm wind becoming north around 6 mph in the morning.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 89. Calm wind becoming west northwest around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Crainville IL
 37.72°N 89.06°W
Last Update:
8:51 pm CDT Aug 11, 2026
Forecast Valid:
9pm CDT Aug 11, 2026-6pm CDT Aug 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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