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.

Fog/Mist

35°F

2°C

Humidity 96%
Wind Speed S 3 mph
Barometer 29.98 in
Dewpoint 34°F (1°C)
Visibility 5.00 mi
Last update 27 Feb 2:55 am CST
Extended Forecast for

Benton IL

  • Overnight

    Overnight: Clear, with a low around 35. Calm wind.

    Low: 35 °F

    Clear

  • Friday

    Friday: Patchy fog before 7am. Otherwise, sunny, with a high near 70. Light south southwest wind becoming southwest 5 to 10 mph in the morning.

    High: 70 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. South wind 5 to 8 mph becoming north northeast after midnight.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 68. East northeast wind 5 to 7 mph becoming south in the afternoon.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 35. South wind 6 to 10 mph becoming north in the evening. Winds could gust as high as 20 mph.

    Low: 35 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 49. East northeast wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 49 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain showers likely before 3am, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 35. East northeast wind around 10 mph. Chance of precipitation is 70%.

    Low: 35 °F

    Chance
    Showers then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 46. East northeast wind 8 to 10 mph.

    High: 46 °F

    Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 38. East wind around 7 mph.

    Low: 38 °F

    Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 35. Calm wind.
Friday
Patchy fog before 7am. Otherwise, sunny, with a high near 70. Light south southwest wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 42. South wind 5 to 8 mph becoming north northeast after midnight.
Saturday
Mostly sunny, with a high near 68. East northeast wind 5 to 7 mph becoming south in the afternoon.
Saturday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 35. South wind 6 to 10 mph becoming north in the evening. Winds could gust as high as 20 mph.
Sunday
Mostly cloudy, with a high near 49. East northeast wind 9 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Rain showers likely before 3am, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 35. East northeast wind around 10 mph. Chance of precipitation is 70%.
Monday
A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 46. East northeast wind 8 to 10 mph.
Monday Night
A chance of showers. Mostly cloudy, with a low around 38. East wind around 7 mph.
Tuesday
Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 57. Southeast wind 7 to 9 mph becoming west southwest in the afternoon.
Tuesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 46. West wind around 7 mph becoming east northeast in the evening.
Wednesday
A chance of showers and thunderstorms. Cloudy, with a high near 65. South wind 7 to 10 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 54. South wind 8 to 11 mph, with gusts as high as 21 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 69. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
Last Update:
12:17 am CST Feb 27, 2026
Forecast Valid:
3am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation