Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair and Breezy
30°F
-1°C
| Humidity | 55% |
| Wind Speed | N 21 G 28 mph |
| Barometer | 30.03 in |
| Dewpoint | 16°F (-9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 17°F (-8°C) |
| Last update | 14 Jan 5:45 pm CST |
Extended Forecast for
Marion IL
Tonight
Low: 19 °F
Mostly Clear
Thursday
High: 34 °F
Sunny
Thursday Night
Low: 29 °F⇑
Mostly Cloudy
then Slight
Chance Snow
ShowersFriday
High: 46 °F
Partly Sunny
Friday Night
Low: 23 °F
Mostly Cloudy
Saturday
High: 30 °F
Partly Sunny
Saturday Night
Low: 11 °F
Partly Cloudy
Sunday
High: 25 °F
Sunny
Sunday Night
Low: 16 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 19. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 28 mph.
Thursday
Sunny, with a high near 34. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Thursday Night
A 20 percent chance of snow showers after midnight. Mostly cloudy, with a temperature rising to around 34 by 3am. Light south wind becoming south southwest 6 to 11 mph in the evening. Winds could gust as high as 22 mph.
Friday
Partly sunny, with a high near 46. West wind 9 to 13 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 23. West wind 7 to 9 mph.
Saturday
Partly sunny, with a high near 30. West northwest wind 9 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 11. Northwest wind around 7 mph.
Sunday
Sunny, with a high near 25. West northwest wind 6 to 10 mph becoming southwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 16. South southwest wind 7 to 9 mph.
M.L.King Day
Mostly sunny, with a high near 30. Northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 11. Northwest wind 3 to 7 mph.
Tuesday
Sunny, with a high near 32. Light and variable wind becoming west 5 to 9 mph in the morning.
Tuesday Night
Mostly clear, with a low around 20. South southwest wind 6 to 8 mph.
Wednesday
Sunny, with a high near 40. Southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.92°W
37.73°N 88.92°W
3:36 pm CST Jan 14, 2026
6pm CST Jan 14, 2026-6pm CST Jan 21, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
