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

28°F

-2°C

Humidity 75%
Wind Speed S 10 mph
Barometer 30.00 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 5 Feb 7:55 pm CST
Extended Forecast for

2 Miles NNE Royalton IL

  • Tonight

    Tonight: Partly cloudy, with a low around 29. South wind 5 to 8 mph becoming west after midnight.

    Low: 29 °F

    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 47. West southwest wind 6 to 11 mph becoming north northwest 12 to 17 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 47 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23. North northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 35. North northeast wind 5 to 7 mph becoming east in the afternoon.

    High: 35 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23. Southeast wind 3 to 6 mph.

    Low: 23 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 49. South wind 6 to 9 mph.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29. Southeast wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. South wind 3 to 6 mph.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 29. South wind 5 to 8 mph becoming west after midnight.
Friday
Increasing clouds, with a high near 47. West southwest wind 6 to 11 mph becoming north northwest 12 to 17 mph in the afternoon. Winds could gust as high as 32 mph.
Friday Night
Mostly cloudy, with a low around 23. North northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 35. North northeast wind 5 to 7 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 23. Southeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 49. South wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 29. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 55. Calm wind becoming south southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 39. South wind 3 to 6 mph.
Tuesday
A slight chance of showers after noon. Partly sunny, with a high near 62. South southwest wind 6 to 10 mph.
Tuesday Night
A chance of showers. Cloudy, with a low around 45. South southwest wind around 8 mph.
Wednesday
A chance of showers. Mostly cloudy, with a high near 57. West southwest wind 7 to 10 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 37. Southwest wind around 7 mph becoming northwest after midnight.
Thursday
A chance of showers. Mostly cloudy, with a high near 51. Northwest wind 7 to 10 mph becoming southeast 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 NNE Royalton IL
 37.9°N 89.11°W
Last Update:
5:12 pm CST Feb 5, 2026
Forecast Valid:
7pm CST Feb 5, 2026-6pm CST Feb 12, 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