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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

44°F

7°C

Humidity 54%
Wind Speed NE 3 mph
Barometer 30.09 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 13 Mar 11:15 pm CDT
Extended Forecast for

Vienna IL

  • Tonight

    Tonight: Mostly clear, with a low around 40. Light northeast wind.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 68. East northeast wind 5 to 9 mph becoming south southeast in the afternoon.

    High: 68 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55. South wind 6 to 10 mph, with gusts as high as 24 mph.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 72. Breezy, with a south wind 14 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 50%.

    High: 72 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 27. Breezy, with a south wind 14 to 20 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%.

    Low: 27 °F

    Showers and
    Breezy then
    Rain/Snow

  • Monday

    Monday: A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 35. West northwest wind around 16 mph, with gusts as high as 29 mph.

    High: 35 °F

    Slight Chance
    Snow Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 15. West northwest wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 39. West northwest wind around 6 mph.

    High: 39 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 28. South wind 3 to 8 mph.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 40. Light northeast wind.
Saturday
Sunny, with a high near 68. East northeast wind 5 to 9 mph becoming south southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 55. South wind 6 to 10 mph, with gusts as high as 24 mph.
Sunday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 72. Breezy, with a south wind 14 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 50%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 27. Breezy, with a south wind 14 to 20 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%.
Monday
A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 35. West northwest wind around 16 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 15. West northwest wind 6 to 14 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 39. West northwest wind around 6 mph.
Tuesday Night
A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 28. South wind 3 to 8 mph.
Wednesday
A slight chance of showers before 1pm. Partly sunny, with a high near 58. South southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 41. South southwest wind 3 to 6 mph.
Thursday
Sunny, with a high near 69. Southwest wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 47. Light and variable wind.
Friday
Mostly sunny, with a high near 70. South southwest wind 5 to 7 mph becoming west in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vienna IL
 37.42°N 88.91°W
Last Update:
11:21 pm CDT Mar 13, 2026
Forecast Valid:
11pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation