Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
63°F
17°C
| Humidity | 79% |
| Wind Speed | S 8 mph |
| Barometer | 29.75 in |
| Dewpoint | 57°F (14°C) |
| Visibility | 10.00 mi |
| Last update | 22 Mar 5:15 am CDT |
Extended Forecast for
Marion IL
Today
High: 85 °F
Sunny then
Slight Chance
T-stormsTonight
Low: 38 °F
Chance
T-stormsMonday
High: 58 °F
Mostly Sunny
Monday Night
Low: 40 °F
Mostly Cloudy
Tuesday
High: 66 °F
Mostly Sunny
Tuesday Night
Low: 46 °F
Mostly Cloudy
Wednesday
High: 74 °F
Partly Sunny
Wednesday Night
Low: 61 °F
Partly Cloudy
then Slight
Chance
T-stormsThursday
High: 85 °F
Sunny then
Slight Chance
T-storms
Detailed Forecast
Today
A 10 percent chance of showers and thunderstorms after 5pm. Sunny, with a high near 85. South southwest wind 8 to 16 mph, with gusts as high as 26 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 38. West southwest wind 11 to 18 mph becoming north after midnight. Winds could gust as high as 31 mph.
Monday
Mostly sunny, with a high near 58. North northeast wind around 11 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around 40. Northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 66. East southeast wind 3 to 6 mph.
Tuesday Night
Mostly cloudy, with a low around 46. Calm wind.
Wednesday
Partly sunny, with a high near 74. Light south wind becoming south southwest 5 to 9 mph in the morning.
Wednesday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. South wind around 8 mph.
Thursday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 85. Southwest wind 9 to 14 mph, with gusts as high as 23 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. South southwest wind around 11 mph becoming north after midnight. Winds could gust as high as 20 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 55. North northeast wind 11 to 13 mph, with gusts as high as 21 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 35. North northeast wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday
Mostly sunny, with a high near 58. East northeast wind around 8 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.95°W
37.73°N 88.95°W
1:26 am CDT Mar 22, 2026
5am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
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