Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Mostly Cloudy
58°F
14°C
| Humidity | 55% |
| Wind Speed | N 15 G 22 mph |
| Barometer | 29.87 in |
| Dewpoint | 42°F (6°C) |
| Visibility | 10.00 mi |
| Last update | 22 Mar 8:35 pm CDT |
Extended Forecast for
Marion IL
Tonight
Low: 37 °F
Severe
Thunderstorms
then Mostly
ClearMonday

High: 57 °F
Sunny
Monday Night

Low: 39 °F
Mostly Cloudy
Tuesday

High: 64 °F
Mostly Sunny
Tuesday Night

Low: 44 °F
Partly Cloudy
Wednesday

High: 74 °F
Mostly Sunny
Wednesday Night

Low: 60 °F
Partly Cloudy
Thursday

High: 85 °F
Sunny
Thursday Night

Low: 45 °F
Chance
Showers
Detailed Forecast
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming clear, with a low around 37. Southwest wind 14 to 16 mph becoming north after midnight. Winds could gust as high as 28 mph.
Monday
Sunny, with a high near 57. North northeast wind 11 to 13 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 39. Northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 64. East southeast wind around 6 mph.
Tuesday Night
Partly cloudy, with a low around 44. Calm wind.
Wednesday
Mostly sunny, with a high near 74. South southwest wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 60. South wind 6 to 9 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 85. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 45. South southwest wind 11 to 13 mph becoming north after midnight. Winds could gust as high as 22 mph.
Friday
A chance of showers. Partly sunny, with a high near 56. North wind around 15 mph, with gusts as high as 23 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 32. North wind 7 to 11 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 58. Northeast wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 38. East northeast wind around 5 mph becoming light and variable in the evening.
Sunday
Mostly sunny, with a high near 66. South southwest wind 5 to 9 mph.
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ABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.92°W
37.73°N 88.92°W
8:21 pm CDT Mar 22, 2026
8pm CDT Mar 22, 2026-6pm CDT Mar 29, 2026



