Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Overcast
70°F
21°C
| Humidity | 88% |
| Wind Speed | NW 7 mph |
| Barometer | 29.77 in |
| Dewpoint | 66°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 2 Aug 8:45 am CDT |
Extended Forecast for
Marion IL
Today
High: 80 °F
Patchy
Drizzle then
Slight Chance
T-stormsTonight
Low: 65 °F
Partly Cloudy
Monday
High: 86 °F
Mostly Sunny
Monday Night
Low: 64 °F
Clear
Tuesday
High: 88 °F
Sunny
Tuesday Night
Low: 66 °F
Mostly Clear
Wednesday
High: 91 °F
Sunny
Wednesday Night
Low: 70 °F
Mostly Clear
Thursday
High: 90 °F
Slight Chance
T-storms
Detailed Forecast
Today
Patchy showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm. Mostly cloudy, with a high near 80. North northwest wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 65. North wind 5 to 10 mph becoming light after midnight.
Monday
Mostly sunny, with a high near 86. North wind 3 to 8 mph.
Monday Night
Clear, with a low around 64. North northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 88. Calm wind becoming north northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 66. Calm wind.
Wednesday
Sunny, with a high near 91. Calm wind becoming south southwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 70. Calm wind.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 8 mph in the morning.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71. South wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Southwest wind 3 to 7 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Light south wind.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming south southwest 5 to 8 mph in the morning.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.92°W
37.73°N 88.92°W
8:00 am CDT Aug 2, 2026
9am CDT Aug 2, 2026-6pm CDT Aug 8, 2026
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