Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

81°F

27°C

Humidity 98%
Wind Speed SW 3 mph
Barometer 29.97 in
Dewpoint 80°F (27°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 25 Jul 8:15 pm CDT
Extended Forecast for

Benton IL

Heat Advisory July 26, 11:00am until July 28, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Patchy fog after 1am.  Otherwise, increasing clouds, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: A 10 percent chance of showers and thunderstorms after 5pm.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 95. Heat index values as high as 108. Light and variable wind.

    High: 95 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 76. Light and variable wind.

    Low: 76 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 99. Heat index values as high as 112. Light south southwest wind becoming southwest 5 to 10 mph in the morning.

    High: 99 °F

    Hot

  • Monday Night

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

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. North northwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. Northeast wind 5 to 9 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Light north northeast wind increasing to 5 to 9 mph in the morning.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. North northeast wind 5 to 7 mph becoming calm  in the evening.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, increasing clouds, with a low around 72. Calm wind.
Sunday
A 10 percent chance of showers and thunderstorms after 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 95. Heat index values as high as 108. Light and variable wind.
Sunday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 76. Light and variable wind.
Monday
Mostly sunny and hot, with a high near 99. Heat index values as high as 112. Light south southwest wind becoming southwest 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 79. South southwest wind around 9 mph.
Tuesday
Sunny, with a high near 96. North northwest wind 6 to 11 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 71. Northeast wind 5 to 9 mph.
Wednesday
Sunny, with a high near 91. Light north northeast wind increasing to 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 68. North northeast wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 90. Calm wind becoming northeast around 6 mph in the morning.
Thursday Night
Partly cloudy, with a low around 69. Northeast wind around 6 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. Northeast wind around 6 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming north 5 to 8 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
7:51 pm CDT Jul 25, 2026
8pm CDT Jul 25, 2026-6pm CDT Aug 1, 2026
 
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