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.

N/A

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

Benton IL

Extreme Heat Warning September 2, 03:43am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 2, 03:43am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Overnight

    Low: 77 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. Heat index values as high as 106. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 77. South wind around 6 mph becoming calm in the evening.

    Low: 77 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. Heat index values as high as 105. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 77. Light south southwest wind.

    Low: 77 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Light southwest wind.

    High: 100 °F

    Hot

  • Friday Night

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

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers and thunderstorms. Sunny and hot, with a high near 99. Light and variable wind.

    High: 99 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Clear, with a low around 77. Calm wind.
Wednesday
Sunny and hot, with a high near 101. Heat index values as high as 106. Calm wind becoming southwest 5 to 8 mph in the morning.
Wednesday Night
Clear, with a low around 77. South wind around 6 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 100. Heat index values as high as 105. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Thursday Night
Clear, with a low around 77. Light south southwest wind.
Friday
Sunny and hot, with a high near 100. Light southwest wind.
Friday Night
Mostly clear, with a low around 76. Calm wind.
Saturday
A slight chance of showers and thunderstorms. Sunny and hot, with a high near 99. Light and variable wind.
Saturday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 73. Calm wind.
Sunday
Sunny, with a high near 96. Calm wind becoming northeast 5 to 7 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 70. Northeast wind around 6 mph becoming calm in the evening.
Labor Day
Sunny, with a high near 95. Calm wind becoming east northeast 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 69. North northeast wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 95. Calm wind becoming south 5 to 8 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38.02°N 88.93°W
Last Update:
1:25 am CDT Sep 2, 2026
Forecast Valid:
3am CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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