Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
11°F
-12°C
| Humidity | 60% |
| Wind Speed | S 9 mph |
| Barometer | 30.29 in |
| Dewpoint | 0°F (-18°C) |
| Visibility | 10.00 mi |
| Wind Chill | -2°F (-19°C) |
| Last update | 27 Jan 3:35 am CST |
Extended Forecast for
Marion IL
Extreme Cold Warning January 27, 03:45am until January 27, 10:00am
NOW until 10:00am Tue

Extreme Cold Warning
Overnight

Low: 12 °F
Mostly Clear
Tuesday

High: 31 °F
Sunny
Tuesday Night

Low: 0 °F
Mostly Cloudy
Wednesday

High: 29 °F
Mostly Sunny
Wednesday Night

Low: 10 °F
Partly Cloudy
Thursday

High: 24 °F
Mostly Cloudy
Thursday Night

Low: 4 °F
Mostly Cloudy
Friday

High: 16 °F
Mostly Sunny
Detailed Forecast
Overnight
Mostly clear, with a steady temperature around 12. Wind chill values as low as -3. South southwest wind around 11 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 31. Wind chill values as low as -1. Southwest wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 0. Light northwest wind.
Wednesday
Mostly sunny, with a high near 29. Wind chill values as low as zero. Calm wind becoming west around 6 mph.
Wednesday Night
Partly cloudy, with a low around 10. Calm wind.
Thursday
Mostly cloudy, with a high near 24. Calm wind becoming north around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 4. North wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 16. North wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around -1. North wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 17. Northwest wind 6 to 9 mph.
Saturday Night
Partly cloudy, with a low around 2. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 25. Calm wind becoming west around 6 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 10. Southwest wind 3 to 5 mph.
Monday
Partly sunny, with a high near 32. West southwest wind 5 to 7 mph.
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ABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.95°W
37.73°N 88.95°W
3:26 am CST Jan 27, 2026
3am CST Jan 27, 2026-6pm CST Feb 2, 2026



