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.

Partly Cloudy

40°F

4°C

Humidity 97%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 10 Jan 4:15 am CST
Extended Forecast for

Benton ILSimilar City Names

  • Overnight

    Overnight: A 20 percent chance of showers after 5am. Mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers between 9am and 11am. Cloudy, then gradual clearing during the afternoon, with a high near 47. Light north northwest wind becoming northwest 11 to 16 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 30%.

    High: 47 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers between 9pm and midnight. Mostly clear, with a low around 27. West northwest wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 39. Northwest wind 5 to 14 mph, with gusts as high as 24 mph.

    High: 39 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 25. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 25 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 50. Southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58. South southwest wind 10 to 15 mph, with gusts as high as 22 mph.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. West southwest wind 6 to 9 mph.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers after 5am. Mostly cloudy, with a low around 42. Calm wind.
Saturday
A chance of showers between 9am and 11am. Cloudy, then gradual clearing during the afternoon, with a high near 47. Light north northwest wind becoming northwest 11 to 16 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 30%.
Saturday Night
A slight chance of showers between 9pm and midnight. Mostly clear, with a low around 27. West northwest wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 39. Northwest wind 5 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Clear, with a low around 25. Calm wind becoming south southwest around 6 mph after midnight.
Monday
Sunny, with a high near 50. Southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 36. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 58. South southwest wind 10 to 15 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 40. West southwest wind 6 to 9 mph.
Wednesday
A slight chance of showers after noon. Partly sunny, with a high near 46. Northwest wind 7 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 22. North wind 7 to 10 mph.
Thursday
Mostly sunny, with a high near 37. North wind 5 to 9 mph becoming west southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 26. South southwest wind 5 to 8 mph.
Friday
Partly sunny, with a high near 46. West wind 7 to 13 mph, with gusts as high as 18 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Benton ILSimilar City Names
 38°N 88.93°W
Last Update:
3:16 am CST Jan 10, 2026
Forecast Valid:
4am CST Jan 10, 2026-6pm CST Jan 16, 2026
 
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