Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Overcast
44°F
7°C
| Humidity | 77% |
| Wind Speed | Calm |
| Barometer | 30.32 in |
| Dewpoint | 38°F (3°C) |
| Visibility | 10.00 mi |
| Last update | 7 Apr 2:55 am CDT |
Extended Forecast for
Marion IL
Overnight

Low: 41 °F
Partly Cloudy
Tuesday

High: 59 °F
Mostly Sunny
Tuesday Night

Low: 39 °F
Mostly Clear
Wednesday

High: 74 °F
Mostly Sunny
Wednesday Night

Low: 53 °F
Mostly Clear
Thursday

High: 76 °F
Sunny
Thursday Night

Low: 54 °F
Mostly Clear
Friday
High: 78 °F
Sunny then
Slight Chance
T-stormsFriday Night

Low: 58 °F
Slight Chance
T-storms
Detailed Forecast
Overnight
Partly cloudy, with a low around 41. North northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 59. East northeast wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 39. East northeast wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 74. East southeast wind 6 to 10 mph becoming south in the afternoon.
Wednesday Night
Mostly clear, with a low around 53. South wind 6 to 8 mph.
Thursday
Sunny, with a high near 76. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 54. South wind around 6 mph.
Friday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78. South southwest wind 6 to 10 mph.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Light and variable wind.
Saturday
Mostly sunny, with a high near 81. Light and variable wind becoming south southeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 60. Southeast wind around 5 mph.
Sunday
Mostly sunny, with a high near 84. South wind 6 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South wind 11 to 13 mph, with gusts as high as 24 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 29 mph.
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.92°W
37.73°N 88.92°W
2:31 am CDT Apr 7, 2026
3am CDT Apr 7, 2026-6pm CDT Apr 13, 2026


