Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
63°F
17°C
| Humidity | 24% |
| Wind Speed | NE 5 mph |
| Barometer | 30.21 in |
| Dewpoint | 25°F (-4°C) |
| Visibility | 10.00 mi |
| Last update | 24 Mar 3:47 pm CDT |
Extended Forecast for
Marion IL
This Afternoon

High: 64 °F
Mostly Sunny
Tonight

Low: 45 °F
Mostly Cloudy
Wednesday

High: 75 °F
Mostly Sunny
Wednesday Night

Low: 61 °F
Mostly Clear
Thursday

High: 86 °F
Sunny
Thursday Night
Low: 46 °F
Partly Cloudy
then Chance
T-stormsFriday

High: 55 °F
Showers
LikelyFriday Night

Low: 33 °F
Mostly Clear
Saturday

High: 59 °F
Sunny
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 64. East northeast wind around 6 mph.
Tonight
Mostly cloudy, with a low around 45. East wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 75. Light south southeast wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 61. South wind 8 to 11 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 86. South southwest wind 11 to 17 mph, with gusts as high as 26 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 46. South southwest wind 11 to 14 mph becoming north after midnight. Winds could gust as high as 24 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 55. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Friday Night
Mostly clear, with a low around 33. North wind 5 to 11 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 59. East wind around 6 mph.
Saturday Night
Partly cloudy, with a low around 39. Light southeast wind.
Sunday
Mostly sunny, with a high near 65. Light southeast wind becoming south 5 to 9 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 52. South wind around 8 mph.
Monday
Mostly sunny, with a high near 78. South southwest wind 8 to 13 mph, with gusts as high as 21 mph.
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ABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.95°W
37.73°N 88.95°W
4:31 pm CDT Mar 24, 2026
4pm CDT Mar 24, 2026-6pm CDT Mar 30, 2026


