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.

Partly Cloudy

90°F

32°C

Humidity 63%
Wind Speed E 6 mph
Barometer 30.09 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 14 Aug 11:45 am CDT
Extended Forecast for

Buckner IL

Extreme Heat Warning August 14, 12:27pm until August 16, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 14, 12:27pm until August 16, 08:00pm

    NOW until 8:00pm Sun

    Extreme Heat Warning

  • This Afternoon

    High: 95 °F

    Mostly Sunny

  • Tonight

    Tonight: Clear, with a low around 76. Light south wind.

    Low: 76 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 109. Southwest wind 3 to 6 mph.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Calm wind becoming southwest around 6 mph after midnight.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. West wind 3 to 7 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. Light and variable wind.

    Low: 74 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 90. Light north wind increasing to 5 to 9 mph in the morning.

    High: 90 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. North wind 5 to 7 mph becoming calm in the evening.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 95. Heat index values as high as 107. South wind 3 to 6 mph.
Tonight
Clear, with a low around 76. Light south wind.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 109. Southwest wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 76. Calm wind becoming southwest around 6 mph after midnight.
Sunday
Sunny and hot, with a high near 99. West wind 3 to 7 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. Light and variable wind.
Monday
Mostly sunny, with a high near 90. Light north wind increasing to 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 68. North wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 90. Calm wind becoming east northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 70. Light and variable wind.
Wednesday
Mostly sunny, with a high near 96. Light south wind becoming southwest 6 to 11 mph in the morning.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. South southwest wind 5 to 8 mph becoming north northeast after midnight.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. North northwest wind 5 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Buckner IL
 37.98°N 89.02°W
Last Update:
11:46 am CDT Aug 14, 2026
Forecast Valid:
12pm CDT Aug 14, 2026-6pm CDT Aug 20, 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