Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
59°F
15°C
| Humidity | 34% |
| Wind Speed | SW 8 mph |
| Barometer | 29.79 in |
| Dewpoint | 30°F (-1°C) |
| Visibility | 10.00 mi |
| Last update | 13 Jan 4:45 pm CST |
Extended Forecast for
Marion IL
Tonight
Low: 42 °F
Showers
LikelyWednesday
High: 43 °F⇓
Mostly Cloudy
then Mostly
Sunny and
BreezyWednesday Night
Low: 19 °F
Mostly Clear
Thursday
High: 33 °F
Sunny
Thursday Night
Low: 25 °F
Partly Cloudy
then Slight
Chance Snow
ShowersFriday
High: 47 °F
Partly Sunny
Friday Night
Low: 22 °F
Mostly Cloudy
Saturday
High: 30 °F
Partly Sunny
Saturday Night
Low: 13 °F
Partly Cloudy
Detailed Forecast
Tonight
Showers likely, mainly between 11pm and 2am. Mostly cloudy, with a low around 42. Southwest wind 5 to 8 mph becoming west northwest after midnight. Chance of precipitation is 60%.
Wednesday
Partly sunny, with a temperature falling to around 32 by 5pm. Breezy, with a north northwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph.
Wednesday Night
Mostly clear, with a low around 19. North northwest wind 6 to 15 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 33. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Thursday Night
A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 25. Light south southwest wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 47. West wind 11 to 14 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around 22. West wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
Partly sunny, with a high near 30. West northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 13. West northwest wind 6 to 8 mph.
Sunday
Sunny, with a high near 31. West southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 18. Southwest wind around 8 mph.
M.L.King Day
Sunny, with a high near 36. West wind 7 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 13. Northwest wind around 6 mph.
Tuesday
Sunny, with a high near 33. Northwest wind 5 to 8 mph becoming south in the afternoon.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.92°W
37.73°N 88.92°W
3:17 pm CST Jan 13, 2026
5pm CST Jan 13, 2026-6pm CST Jan 20, 2026
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