Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
54°F
12°C
| Humidity | 27% |
| Wind Speed | W 13 G 26 mph |
| Barometer | 29.64 in |
| Dewpoint | 21°F (-6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 50°F (10°C) |
| Last update | 20 Feb 1:55 am CST |
Extended Forecast for
Marion IL
Overnight
Low: 38 °F
Clear
Friday
High: 50 °F
Sunny
Friday Night
Low: 32 °F
Mostly Cloudy
then Slight
Chance
ShowersSaturday
High: 44 °F
Slight Chance
Snow Showers
then Mostly
SunnySaturday Night
Low: 24 °F
Mostly Clear
Sunday
High: 39 °F
Sunny
Sunday Night
Low: 18 °F
Mostly Clear
Monday
High: 36 °F
Sunny
Monday Night
Low: 18 °F
Mostly Clear
Detailed Forecast
Overnight
Clear, with a low around 38. West wind 11 to 13 mph, with gusts as high as 24 mph.
Friday
Sunny, with a high near 50. West wind 5 to 14 mph, with gusts as high as 23 mph.
Friday Night
A 20 percent chance of showers after midnight. Increasing clouds, with a low around 32. Light north wind.
Saturday
A 20 percent chance of snow showers before noon. Mostly sunny, with a high near 44. Light north wind becoming north northwest 5 to 9 mph in the morning.
Saturday Night
Mostly clear, with a low around 24. Northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 39. Northwest wind 10 to 17 mph, with gusts as high as 29 mph.
Sunday Night
Mostly clear, with a low around 18. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 36. North northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 18. Light and variable wind.
Tuesday
Mostly sunny, with a high near 47. Light south southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 38. South southwest wind 11 to 13 mph, with gusts as high as 23 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 57. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 36. Southwest wind 6 to 8 mph becoming north northwest after midnight.
Thursday
A slight chance of showers. Mostly sunny, with a high near 55. North northwest wind 6 to 9 mph becoming northeast in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.92°W
37.73°N 88.92°W
2:02 am CST Feb 20, 2026
2am CST Feb 20, 2026-6pm CST Feb 26, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
