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

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

66°F

19°C

Humidity 94%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 4 Aug 4:35 am CDT
Extended Forecast for

Vienna IL

  • Today

    Today: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. Light and variable wind. Chance of precipitation is 40%.

    High: 84 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers after 4am. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Calm wind. Chance of precipitation is 30%.

    High: 85 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Calm wind.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 69. Calm wind.

    Low: 69 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 91. Light south southeast wind.

    High: 91 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. Light and variable wind. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers after 4am. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%.
Tuesday
A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Calm wind. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 67. Calm wind.
Wednesday
Sunny, with a high near 88. Calm wind.
Wednesday Night
Mostly clear, with a low around 68. Calm wind.
Thursday
Sunny, with a high near 90. Calm wind.
Thursday Night
Clear, with a low around 69. Calm wind.
Friday
Sunny, with a high near 91. Light south southeast wind.
Friday Night
Mostly clear, with a low around 70. Calm wind.
Saturday
Sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 72. Calm wind.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Calm wind becoming south southwest around 5 mph.
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 88.88°W
Last Update:
4:30 am CDT Aug 4, 2025
Forecast Valid:
4am CDT Aug 4, 2025-6pm CDT Aug 10, 2025
 
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