Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
52°F
11°C
| Humidity | 54% |
| Wind Speed | SE 7 mph |
| Barometer | 30.27 in |
| Dewpoint | 36°F (2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 50°F (10°C) |
| Last update | 8 Apr 8:45 am CDT |
Extended Forecast for
Marion IL
Today
High: 75 °F
Mostly Sunny
Tonight
Low: 54 °F
Mostly Clear
Thursday
High: 78 °F
Sunny
Thursday Night
Low: 56 °F
Mostly Clear
Friday
High: 79 °F
Mostly Sunny
then Chance
T-stormsFriday Night
Low: 58 °F
Chance
T-stormsSaturday
High: 78 °F
Partly Sunny
then Slight
Chance
T-stormsSaturday Night
Low: 60 °F
Partly Cloudy
Sunday
High: 83 °F
Partly Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 75. South wind 6 to 10 mph.
Tonight
Mostly clear, with a low around 54. South wind around 7 mph.
Thursday
Sunny, with a high near 78. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 56. South wind around 6 mph.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79. South southwest wind 6 to 10 mph.
Friday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 58. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Light and variable wind becoming east southeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 60. South southeast wind around 5 mph.
Sunday
Partly sunny, with a high near 83. South wind 6 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A chance of showers after 1am. Mostly cloudy, with a low around 67. South wind 11 to 14 mph, with gusts as high as 24 mph.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 31 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. South southwest wind 14 to 16 mph, with gusts as high as 26 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.95°W
37.73°N 88.95°W
7:21 am CDT Apr 8, 2026
9am CDT Apr 8, 2026-6pm CDT Apr 14, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
