National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

27°F

-3°C

Humidity 63%
Wind Speed SW 7 mph
Barometer 30.21 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 2 Feb 3:55 am CST
Extended Forecast for

Vienna IL

  • Today

    Today: Mostly sunny, with a high near 39. Calm wind becoming southwest around 5 mph.

    High: 39 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 25. Light south southeast wind.

    Low: 25 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of freezing rain between 8am and 9am, then a chance of rain. Mostly cloudy, with a high near 40. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 40%.

    High: 40 °F

    Chance
    Rain/Freezing
    Rain then
    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22. North wind 3 to 6 mph.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 32. North wind 3 to 6 mph.

    High: 32 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 16. Calm wind.

    Low: 16 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 37. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. Southwest wind around 6 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 49. West southwest wind 5 to 9 mph becoming north northwest in the afternoon.

    High: 49 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 39. Calm wind becoming southwest around 5 mph.
Tonight
Mostly cloudy, with a low around 25. Light south southeast wind.
Tuesday
A slight chance of freezing rain between 8am and 9am, then a chance of rain. Mostly cloudy, with a high near 40. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 22. North wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 32. North wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 16. Calm wind.
Thursday
Mostly sunny, with a high near 37. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 28. Southwest wind around 6 mph.
Friday
Sunny, with a high near 49. West southwest wind 5 to 9 mph becoming north northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 23. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 39. Calm wind becoming north around 6 mph.
Saturday Night
Partly cloudy, with a low around 23. Light and variable wind.
Sunday
Mostly sunny, with a high near 43. Calm wind becoming south southeast around 6 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vienna IL
 37.42°N 88.91°W
Last Update:
3:22 am CST Feb 2, 2026
Forecast Valid:
4am CST Feb 2, 2026-6pm CST Feb 8, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation