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.

Fair

73°F

23°C

Humidity 53%
Wind Speed Calm
Barometer 30.27 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 14 Oct 10:45 am CDT
Extended Forecast for

Vienna IL

  • Today

    Today: Sunny, with a high near 82. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, clear, with a low around 54. Calm wind.

    Low: 54 °F

    Clear then
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, sunny, with a high near 82. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56. Calm wind.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Calm wind becoming east around 6 mph in the morning.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. Light east wind.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 82. Calm wind becoming south around 6 mph in the afternoon.

    High: 82 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. South wind 3 to 5 mph.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 78. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 78 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 82. Calm wind becoming northeast around 6 mph in the afternoon.
Tonight
Patchy fog after 5am. Otherwise, clear, with a low around 54. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, sunny, with a high near 82. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 56. Calm wind.
Thursday
Sunny, with a high near 80. Calm wind becoming east around 6 mph in the morning.
Thursday Night
Partly cloudy, with a low around 55. Light east wind.
Friday
Partly sunny, with a high near 82. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 62. South wind 3 to 5 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 78. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 53. Southwest wind 5 to 7 mph.
Sunday
A slight chance of showers. Sunny, with a high near 70. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Clear, with a low around 43. West northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 72. Calm wind becoming southwest 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vienna IL
 37.42°N 88.91°W
Last Update:
10:31 am CDT Oct 14, 2025
Forecast Valid:
10am CDT Oct 14, 2025-6pm CDT Oct 20, 2025
 
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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