Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
58°F
14°C
| Humidity | 57% |
| Wind Speed | SW 8 mph |
| Barometer | 30.21 in |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Last update | 9 Apr 2:35 am CDT |
Extended Forecast for
Marion IL
Overnight
Low: 57 °F
Clear
Thursday
High: 78 °F
Sunny
Thursday Night
Low: 56 °F
Mostly Clear
Friday
High: 80 °F
Mostly Sunny
then Chance
T-stormsFriday Night
Low: 56 °F
Chance
T-storms then
Chance
ShowersSaturday
High: 80 °F
Partly Sunny
then Chance
ShowersSaturday Night
Low: 60 °F
Partly Cloudy
Sunday
High: 83 °F
Partly Sunny
Sunday Night
Low: 65 °F
Slight Chance
T-storms then
Chance
Showers
Detailed Forecast
Overnight
Clear, with a steady temperature around 57. South wind around 7 mph.
Thursday
Sunny, with a high near 78. South southwest wind 8 to 13 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 56. South wind around 7 mph.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56. North wind around 5 mph becoming calm in the evening.
Saturday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. Light and variable wind becoming southeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 60. Southeast wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 83. South southwest wind 6 to 16 mph, with gusts as high as 28 mph.
Sunday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. South wind around 14 mph, with gusts as high as 25 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 29 mph.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 13 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southwest wind 10 to 13 mph, with gusts as high as 21 mph.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 79. South southwest wind 11 to 15 mph, with gusts as high as 23 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
1:21 am CDT Apr 9, 2026
2am CDT Apr 9, 2026-6pm CDT Apr 15, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
