Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Mostly Cloudy
44°F
7°C
| Humidity | 97% |
| Wind Speed | W 5 mph |
| Barometer | 29.75 in |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 41°F (5°C) |
| Last update | 14 Jan 5:35 am CST |
Extended Forecast for
Marion IL
Overnight
Low: 46 °F
Slight Chance
ShowersWednesday
High: 45 °F⇓
Slight Chance
Showers then
Partly Sunny
and BreezyWednesday Night
Low: 19 °F
Mostly Clear
Thursday
High: 33 °F
Sunny
Thursday Night
Low: 25 °F
Mostly Cloudy
Friday
High: 46 °F
Partly Sunny
Friday Night
Low: 22 °F
Mostly Cloudy
Saturday
High: 31 °F
Partly Sunny
Saturday Night
Low: 11 °F
Partly Cloudy
Detailed Forecast
Overnight
A 20 percent chance of showers. Cloudy, with a steady temperature around 46. West wind around 7 mph.
Wednesday
A 20 percent chance of showers before 7am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 32 by 5pm. Breezy, with a north northwest wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.
Wednesday Night
Mostly clear, with a low around 19. Northwest wind 6 to 15 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 33. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Thursday Night
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 46. West wind 10 to 14 mph, with gusts as high as 22 mph.
Friday Night
Mostly cloudy, with a low around 22. West wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday
Partly sunny, with a high near 31. West northwest wind 7 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 11. North northwest wind around 6 mph.
Sunday
Sunny, with a high near 27. Northwest wind 6 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 16. Southwest wind 7 to 9 mph.
M.L.King Day
Mostly sunny, with a high near 34. West wind 8 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 14. West northwest wind 3 to 7 mph.
Tuesday
Sunny, with a high near 35. Light west southwest wind becoming west 5 to 9 mph in the morning.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.95°W
37.73°N 88.95°W
3:16 am CST Jan 14, 2026
5am CST Jan 14, 2026-6pm CST Jan 20, 2026
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