Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

95°F

35°C

Humidity 63%
Wind Speed SW 9 mph
Barometer 29.89 in
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index116°F (47°C)
Last update 26 Jul 3:47 pm CDT
Extended Forecast for

Benton IL

Extreme Heat Warning until July 28, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until July 28, 07:00pm

    NOW until 7:00pm Tue

    Extreme Heat Warning

  • This Afternoon

    High: 96 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am.  Mostly cloudy, then gradually becoming mostly clear, with a low around 78. Calm wind.  Chance of precipitation is 60%.

    Low: 78 °F

    Showers
    Likely then
    Chance
    T-storms

  • Monday

    Monday: Sunny and hot, with a high near 100. Heat index values as high as 112. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. South southwest wind 7 to 9 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Northwest wind 6 to 10 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 70. North wind 5 to 9 mph becoming light northeast  after midnight.

    Low: 70 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 90. North northeast wind 3 to 8 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 66. North northeast wind around 6 mph becoming calm  in the evening.

    Low: 66 °F

    Clear

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96. Heat index values as high as 112. West southwest wind around 6 mph.
Tonight
Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 78. Calm wind. Chance of precipitation is 60%.
Monday
Sunny and hot, with a high near 100. Heat index values as high as 112. Calm wind becoming south 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 79. South southwest wind 7 to 9 mph.
Tuesday
Sunny, with a high near 95. Northwest wind 6 to 10 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70. North wind 5 to 9 mph becoming light northeast after midnight.
Wednesday
Sunny, with a high near 90. North northeast wind 3 to 8 mph.
Wednesday Night
Clear, with a low around 66. North northeast wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 90. Calm wind becoming east northeast around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 68. Light and variable wind.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. East southeast wind around 6 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Calm wind becoming north 5 to 9 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38.02°N 88.93°W
1:21 pm CDT Jul 26, 2026
4pm CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
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Additional Resources

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