Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
46°F
8°C
| Humidity | 76% |
| Wind Speed | NE 6 mph |
| Barometer | 30.15 in |
| Dewpoint | 39°F (4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 43°F (6°C) |
| Last update | 9 Jan 6:47 pm CST |
Extended Forecast for
Royalton IL
Tonight
Low: 42 °F
Cloudy then
Slight Chance
ShowersSaturday
High: 45 °F
Chance
Showers then
SunnySaturday Night

Low: 27 °F
Partly Cloudy
Sunday

High: 38 °F
Sunny
Sunday Night

Low: 24 °F
Mostly Clear
Monday

High: 49 °F
Sunny
Monday Night

Low: 34 °F
Mostly Clear
Tuesday

High: 56 °F
Mostly Sunny
Tuesday Night

Low: 38 °F
Mostly Cloudy
Detailed Forecast
Tonight
A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 42. Light and variable wind.
Saturday
A 30 percent chance of showers, mainly between 9am and 11am. Cloudy, then gradual clearing during the afternoon, with a steady temperature around 45. Light northwest wind increasing to 12 to 17 mph in the morning. Winds could gust as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 27. West northwest wind 7 to 13 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 38. Northwest wind 5 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 24. Calm wind becoming south southwest around 6 mph after midnight.
Monday
Sunny, with a high near 49. Southwest wind 7 to 14 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 34. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 56. Southwest wind 11 to 16 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 38. West southwest wind 7 to 10 mph.
Wednesday
A slight chance of showers after noon. Partly sunny, with a high near 45. Northwest wind 7 to 14 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 22. North northwest wind 7 to 10 mph.
Thursday
Mostly sunny, with a high near 36. North northwest wind 7 to 10 mph.
Thursday Night
Partly cloudy, with a low around 24. West wind around 7 mph becoming south southwest in the evening.
Friday
Partly sunny, with a high near 42. Southwest wind 7 to 11 mph.
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ABOUT THIS FORECAST
Point Forecast:
Royalton IL
37.9°N 89.11°W
37.9°N 89.11°W
5:31 pm CST Jan 9, 2026
7pm CST Jan 9, 2026-6pm CST Jan 16, 2026


