Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
27°F
-3°C
| Humidity | 67% |
| Wind Speed | Calm |
| Barometer | 30.45 in |
| Dewpoint | 17°F (-8°C) |
| Visibility | 10.00 mi |
| Last update | 12 Jan 2:55 am CST |
Extended Forecast for
Marion IL
Overnight
Low: 24 °F
Clear
Monday
High: 51 °F
Sunny
Monday Night
Low: 34 °F
Mostly Clear
Tuesday
High: 58 °F
Sunny
Tuesday Night
Low: 41 °F
Chance
ShowersWednesday
High: 45 °F
Slight Chance
Showers then
Mostly CloudyWednesday Night
Low: 19 °F
Mostly Cloudy
Thursday
High: 32 °F
Sunny
Thursday Night
Low: 23 °F
Partly Cloudy
Detailed Forecast
Overnight
Clear, with a low around 24. South southwest wind around 6 mph.
Monday
Sunny, with a high near 51. Southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 34. South southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 58. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 41. Southwest wind 6 to 10 mph becoming west northwest after midnight. Winds could gust as high as 18 mph.
Wednesday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 45. Northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Wednesday Night
Mostly cloudy, with a low around 19. North northwest wind 13 to 18 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 32. North northwest wind 5 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 23. Light and variable wind becoming south southwest 5 to 9 mph in the evening.
Friday
Partly sunny, with a high near 44. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 23. West wind 6 to 8 mph.
Saturday
Partly sunny, with a high near 34. West northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 13. West northwest wind 7 to 9 mph.
Sunday
Sunny, with a high near 29. West wind 8 to 11 mph, with gusts as high as 20 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.92°W
37.73°N 88.92°W
1:17 am CST Jan 12, 2026
3am CST Jan 12, 2026-6pm CST Jan 18, 2026
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