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.

Overcast

63°F

17°C

Humidity 94%
Wind Speed S 7 mph
Barometer 30.01 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 25 Dec 3:45 pm CST
Extended Forecast for

Royalton IL

  • Christmas Day

    Christmas Day: Mostly cloudy, with a steady temperature around 65. South wind around 6 mph.

    High: 65 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 61 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 73. South southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 73 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. Light and variable wind.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 69. Light and variable wind becoming south southeast 5 to 10 mph in the morning.

    High: 69 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Cloudy, with a low around 61. South southwest wind around 10 mph.

    Low: 61 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Cloudy, with a high near 71. South southwest wind 10 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 71 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 24. Blustery, with a west southwest wind 18 to 20 mph becoming northwest in the evening. Winds could gust as high as 29 mph.

    Low: 24 °F

    Showers then
    Chance
    Rain/Snow and
    Blustery

  • Monday

    Monday: Mostly sunny, with a high near 29. Blustery, with a northwest wind 15 to 21 mph, with gusts as high as 30 mph.

    High: 29 °F

    Mostly Sunny
    and Blustery
    then Sunny

Detailed Forecast

Christmas Day
Mostly cloudy, with a steady temperature around 65. South wind around 6 mph.
Tonight
Mostly cloudy, with a low around 61. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 73. South southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 47. Light and variable wind.
Saturday
Partly sunny, with a high near 69. Light and variable wind becoming south southeast 5 to 10 mph in the morning.
Saturday Night
A 20 percent chance of showers. Cloudy, with a low around 61. South southwest wind around 10 mph.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Cloudy, with a high near 71. South southwest wind 10 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday Night
Rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 24. Blustery, with a west southwest wind 18 to 20 mph becoming northwest in the evening. Winds could gust as high as 29 mph.
Monday
Mostly sunny, with a high near 29. Blustery, with a northwest wind 15 to 21 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 18. Northwest wind 6 to 14 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 35. Northwest wind 6 to 9 mph becoming southwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 24. Southwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 42. West southwest wind 6 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Royalton IL
 37.87°N 89.11°W
Last Update:
3:16 pm CST Dec 25, 2025
Forecast Valid:
4pm CST Dec 25, 2025-6pm CST Dec 31, 2025
 
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Additional Resources

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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