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.

Light Rain

54°F

12°C

Humidity 94%
Wind Speed N 5 mph
Barometer 30.06 in
Dewpoint 52°F (11°C)
Visibility 3.00 mi
Wind Chill53°F (12°C)
Last update 20 Nov 4:45 pm CST
Extended Forecast for

Royalton IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers. Cloudy, with a high near 56. Calm wind.

    High: 56 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers, with thunderstorms also possible after 3am. Patchy fog after 7pm. Low around 54. Calm wind. Chance of precipitation is 90%.

    Low: 54 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    and Areas Fog

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 66. Calm wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 100%.

    High: 66 °F

    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 47. Southwest wind around 6 mph becoming north after midnight. Chance of precipitation is 70%.

    Low: 47 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 58. North wind 3 to 8 mph.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 63. Calm wind becoming southwest around 6 mph.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers after midnight. Mostly cloudy, with a low around 42. Light south southeast wind.

    Low: 42 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: Showers likely, mainly after noon. Mostly cloudy, with a high near 61. Light southeast wind becoming south southeast 5 to 10 mph in the morning.

    High: 61 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 30 percent chance of showers. Cloudy, with a high near 56. Calm wind.
Tonight
Showers, with thunderstorms also possible after 3am. Patchy fog after 7pm. Low around 54. Calm wind. Chance of precipitation is 90%.
Friday
Showers and possibly a thunderstorm. High near 66. Calm wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 100%.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 47. Southwest wind around 6 mph becoming north after midnight. Chance of precipitation is 70%.
Saturday
Mostly sunny, with a high near 58. North wind 3 to 8 mph.
Saturday Night
Mostly clear, with a low around 37. Calm wind.
Sunday
Sunny, with a high near 63. Calm wind becoming southwest around 6 mph.
Sunday Night
A slight chance of showers after midnight. Mostly cloudy, with a low around 42. Light south southeast wind.
Monday
Showers likely, mainly after noon. Mostly cloudy, with a high near 61. Light southeast wind becoming south southeast 5 to 10 mph in the morning.
Monday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Mostly cloudy, with a low around 51. South wind 6 to 8 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 65. South southwest wind 7 to 11 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 38. Northwest wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 51. West northwest wind 7 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 30. West wind 3 to 6 mph.
Thanksgiving Day
Mostly sunny, with a high near 47. West northwest wind 5 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 Nov 20, 2025
Forecast Valid:
5pm CST Nov 20, 2025-6pm CST Nov 27, 2025
 
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Additional Resources

Radar & Satellite Image

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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