Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.N/A
| Humidity | NA |
| Wind Speed | NA |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | NA |
| Last update | *** Not a current observation *** |
Extended Forecast for
Royalton IL
Tonight
Low: 34 °F
Cloudy then
Slight Chance
DrizzleSunday

High: 45 °F
Slight Chance
DrizzleSunday Night
Low: 25 °F
Slight Chance
Rain/Snow
then Mostly
CloudyMonday

High: 37 °F
Decreasing
CloudsMonday Night

Low: 25 °F
Partly Cloudy
Tuesday

High: 49 °F
Mostly Sunny
Tuesday Night

Low: 41 °F
Mostly Cloudy
Wednesday
High: 52 °F
Partly Sunny
then Slight
Chance
ShowersWednesday Night
Low: 29 °F
Slight Chance
Showers then
Chance
Rain/Snow
Detailed Forecast
Tonight
A slight chance of drizzle after 4am. Cloudy, with a low around 34. Light south wind.
Sunday
A slight chance of drizzle before 5pm. Cloudy, with a high near 45. Light and variable wind becoming north northwest 8 to 13 mph in the morning.
Sunday Night
A slight chance of rain and snow showers before 10pm, then a slight chance of snow showers between 10pm and midnight. Cloudy, with a low around 25. North wind 7 to 13 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 37. North wind 5 to 7 mph becoming calm in the afternoon.
Monday Night
Partly cloudy, with a low around 25. Calm wind becoming south southwest 5 to 9 mph after midnight.
Tuesday
Mostly sunny, with a high near 49. South southwest wind 10 to 16 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 41. South southwest wind around 16 mph, with gusts as high as 24 mph.
Wednesday
A slight chance of showers after noon. Partly sunny, with a high near 52. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
A slight chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 29. Northwest wind 5 to 7 mph becoming east after midnight.
Thursday
A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 40. East wind 6 to 10 mph becoming west in the afternoon.
Thursday Night
Mostly cloudy, with a low around 22. West northwest wind 6 to 9 mph.
Friday
Partly sunny, with a high near 31. Northwest wind 9 to 11 mph.
Friday Night
Partly cloudy, with a low around 11. Northwest wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 28. Northwest wind 7 to 10 mph.
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ABOUT THIS FORECAST
Point Forecast:
Royalton IL
37.87°N 89.11°W
37.87°N 89.11°W
5:11 pm CST Dec 6, 2025
9pm CST Dec 6, 2025-6pm CST Dec 13, 2025


