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.

Light Rain

37°F

3°C

Humidity 93%
Wind Speed N 12 mph
Barometer 30.16 in
Dewpoint 36°F (2°C)
Visibility 2.00 mi
Wind Chill29°F (-2°C)
Last update 7 Dec 6:47 pm CST
Extended Forecast for

2 Miles NNE Royalton IL

  • Tonight

    Tonight: A slight chance of rain and snow before 1am, then a chance of flurries between 1am and 3am. Cloudy, with a low around 26. North wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Rain/Snow

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 38. North wind 5 to 8 mph becoming calm in the afternoon.

    High: 38 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 26. Light and variable wind becoming south southwest 6 to 11 mph after midnight. Winds could gust as high as 18 mph.

    Low: 26 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. South southwest wind 13 to 16 mph, with gusts as high as 22 mph.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42. Southwest wind 15 to 17 mph, with gusts as high as 25 mph.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 28. Northwest wind 5 to 7 mph becoming calm.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Thursday

    Thursday: A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 38. North northeast wind 5 to 8 mph becoming south southwest in the morning.

    High: 38 °F

    Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 21. North northwest wind 6 to 10 mph.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of rain and snow before 1am, then a chance of flurries between 1am and 3am. Cloudy, with a low around 26. North wind 8 to 10 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 38. North wind 5 to 8 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 26. Light and variable wind becoming south southwest 6 to 11 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
Mostly sunny, with a high near 49. South southwest wind 13 to 16 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 42. Southwest wind 15 to 17 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 51. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 28. Northwest wind 5 to 7 mph becoming calm.
Thursday
A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 38. North northeast wind 5 to 8 mph becoming south southwest in the morning.
Thursday Night
Mostly cloudy, with a low around 21. North northwest wind 6 to 10 mph.
Friday
Partly sunny, with a high near 31. Northwest wind 10 to 13 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 8. Northwest wind around 10 mph.
Saturday
Mostly sunny, with a high near 23. Northwest wind 6 to 10 mph.
Saturday Night
Partly cloudy, with a low around 10. North northwest wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 27. North northwest wind 6 to 10 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Royalton IL
 37.9°N 89.11°W
Last Update:
8:01 pm CST Dec 7, 2025
Forecast Valid:
9pm CST Dec 7, 2025-6pm CST Dec 14, 2025
 
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Additional Resources

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Chance of Precipitation