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

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Mostly Cloudy

86°F

30°C

Humidity 46%
Wind Speed N 9 mph
Barometer 30.08 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 28 Aug 3:45 pm CDT
Extended Forecast for

Benton ILSimilar City Names

  • This Afternoon

    This Afternoon: Sunny, with a steady temperature around 86. Light northeast wind.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, clear, with a low around 64. Light northeast wind.

    Low: 64 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 92. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 92 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 96. Light south southeast wind becoming south southwest 6 to 11 mph in the morning.

    High: 96 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind 3 to 6 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 98. South southwest wind 6 to 10 mph.

    High: 98 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South wind 3 to 6 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. Southwest wind 3 to 8 mph.

    High: 99 °F

    Hot

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 86. Light northeast wind.
Tonight
Patchy fog after 4am. Otherwise, clear, with a low around 64. Light northeast wind.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 92. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 68. Calm wind.
Sunday
Sunny, with a high near 96. Light south southeast wind becoming south southwest 6 to 11 mph in the morning.
Sunday Night
Mostly clear, with a low around 73. South wind 3 to 6 mph.
Monday
Sunny and hot, with a high near 98. South southwest wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 75. South wind 3 to 6 mph.
Tuesday
Sunny and hot, with a high near 99. Southwest wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 76. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 99. Calm wind becoming southwest 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 100. Southwest wind 3 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Benton ILSimilar City Names
 38°N 88.93°W
Last Update:
3:51 pm CDT Aug 28, 2026
Forecast Valid:
4pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
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