Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Overcast
71°F
22°C
| Humidity | 80% |
| Wind Speed | SW 20 G 31 mph |
| Barometer | 29.77 in |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 11 Mar 5:35 am CDT |
Extended Forecast for
Marion IL
Tornado Watch until March 11, 11:00am
NOW until 11:00am Wed
Tornado Watch
Overnight
Low: 71 °F
Chance
T-stormsWednesday
High: 69 °F⇓
Showers and
BreezyWednesday Night
Low: 33 °F
Gradual
ClearingThursday
High: 55 °F
Sunny
Thursday Night
Low: 42 °F
Partly Cloudy
Friday
High: 64 °F
Mostly Sunny
Friday Night
Low: 38 °F
Partly Cloudy
Saturday
High: 67 °F
Sunny
Detailed Forecast
Overnight
A 50 percent chance of showers and thunderstorms. Cloudy, with a steady temperature around 71. South southwest wind around 17 mph, with gusts as high as 29 mph.
Wednesday
Showers and thunderstorms before 4pm, then showers likely. Temperature falling to around 52 by 4pm. Breezy, with a southwest wind 14 to 20 mph becoming north northwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 90%.
Wednesday Night
Cloudy during the early evening, then gradual clearing, with a low around 33. North northwest wind 10 to 18 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 55. Northwest wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 42. South wind 7 to 12 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 23 mph.
Friday
Mostly sunny, with a high near 64. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 38. West northwest wind around 6 mph becoming light and variable.
Saturday
Sunny, with a high near 67. East wind 6 to 10 mph becoming south southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 54. South southeast wind 9 to 14 mph, with gusts as high as 23 mph.
Sunday
A chance of showers and thunderstorms, then showers likely after 1pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 16 to 23 mph, with gusts as high as 34 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 29. Blustery, with a northwest wind 17 to 22 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 41. Northwest wind 15 to 17 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 22. North northwest wind 5 to 10 mph.
Tuesday
Partly sunny, with a high near 45. Northwest wind 5 to 8 mph becoming southwest 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 88.95°W
37.73°N 88.95°W
5:26 am CDT Mar 11, 2026
5am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
