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.

Fair

50°F

10°C

Humidity 76%
Wind Speed N 9 mph
Barometer 30.42 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 17 Oct 2:15 am CDT
Extended Forecast for

2 Miles NNW Benton IL

Frost Advisory October 17, 09:00pm until October 18, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 41. North wind 11 to 13 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62. North northeast wind 8 to 10 mph.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 4am. Otherwise, clear, with a low around 34. Calm wind.

    Low: 34 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 68. Calm wind becoming southeast around 6 mph in the morning.

    High: 68 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 39. Light east southeast wind.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. Calm wind.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 41. North wind 11 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 62. North northeast wind 8 to 10 mph.
Saturday Night
Areas of frost after 4am. Otherwise, clear, with a low around 34. Calm wind.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 68. Calm wind becoming southeast around 6 mph in the morning.
Sunday Night
Clear, with a low around 39. Light east southeast wind.
Monday
Sunny, with a high near 72. Calm wind.
Monday Night
Mostly clear, with a low around 42. Calm wind.
Tuesday
Sunny, with a high near 75. Calm wind becoming east northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 44. Calm wind.
Wednesday
Sunny, with a high near 78. Light east wind.
Wednesday Night
Clear, with a low around 46. Calm wind.
Thursday
Sunny, with a high near 82. Light north wind.
Thursday Night
Clear, with a low around 49. Calm wind.
Friday
Sunny, with a high near 83. Calm wind becoming east around 6 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Benton IL
 38.02°N 88.93°W
Last Update:
1:26 am CDT Oct 17, 2026
Forecast Valid:
2am CDT Oct 17, 2026-6pm CDT Oct 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation