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

43°F

6°C

Humidity 49%
Wind Speed S 9 mph
Barometer 30.18 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 2 Feb 3:47 pm CST
Extended Forecast for

Royalton IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 43. Light south wind.

    High: 43 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. South southeast wind around 5 mph becoming light and variable.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of drizzle, snow, and freezing rain before 4pm, then a slight chance of snow between 4pm and 5pm. Cloudy, with a high near 36. Light and variable wind becoming north 5 to 10 mph in the morning. Chance of precipitation is 40%.

    High: 36 °F

    Chance Wintry
    Mix

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20. North wind 5 to 8 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 31. North wind 5 to 8 mph.

    High: 31 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 14. North northwest wind around 5 mph becoming calm in the evening.

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 36. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 36 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. South wind around 9 mph becoming west southwest after midnight.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 46. West southwest wind 7 to 10 mph becoming northwest in the afternoon.

    High: 46 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 43. Light south wind.
Tonight
Mostly cloudy, with a low around 27. South southeast wind around 5 mph becoming light and variable.
Tuesday
A chance of drizzle, snow, and freezing rain before 4pm, then a slight chance of snow between 4pm and 5pm. Cloudy, with a high near 36. Light and variable wind becoming north 5 to 10 mph in the morning. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 20. North wind 5 to 8 mph.
Wednesday
Partly sunny, with a high near 31. North wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 14. North northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 36. Calm wind becoming southwest 5 to 8 mph in the morning.
Thursday Night
Mostly clear, with a low around 28. South wind around 9 mph becoming west southwest after midnight.
Friday
Sunny, with a high near 46. West southwest wind 7 to 10 mph becoming northwest in the afternoon.
Friday Night
Mostly clear, with a low around 23. North northwest wind 3 to 6 mph.
Saturday
Sunny, with a high near 37. Light and variable wind becoming east 5 to 7 mph in the morning.
Saturday Night
Partly cloudy, with a low around 24. East wind around 6 mph becoming south after midnight.
Sunday
Mostly sunny, with a high near 41. South wind 5 to 7 mph becoming north in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Royalton IL
 37.9°N 89.11°W
Last Update:
3:56 pm CST Feb 2, 2026
Forecast Valid:
4pm CST Feb 2, 2026-6pm CST Feb 8, 2026
 
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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