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.

Overcast

N/A

Humidity NA
Wind Speed SW 12 mph
Barometer 29.73 in
Dewpoint N/A
Visibility 10.00 mi
Last update 5 May 5:35 am CDT
Extended Forecast for

Vienna IL

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. South wind around 8 mph.

    Low: 60 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms before noon, then showers and possibly a thunderstorm, mainly after noon. High near 67. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    High: 67 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms, mainly before 3am. Low around 48. North wind 7 to 9 mph becoming south southeast in the evening. Chance of precipitation is 100%.

    Low: 48 °F

    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 62. North northeast wind 7 to 9 mph. Chance of precipitation is 40%.

    High: 62 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 45. North wind 3 to 6 mph.

    Low: 45 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 65. North wind 3 to 7 mph.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 73. Calm wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 52. South southwest wind 3 to 8 mph.

    Low: 52 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. South wind around 8 mph.
Tuesday
Showers and thunderstorms before noon, then showers and possibly a thunderstorm, mainly after noon. High near 67. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and thunderstorms, mainly before 3am. Low around 48. North wind 7 to 9 mph becoming south southeast in the evening. Chance of precipitation is 100%.
Wednesday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 62. North northeast wind 7 to 9 mph. Chance of precipitation is 40%.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 45. North wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 65. North wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 43. Calm wind.
Friday
Sunny, with a high near 73. Calm wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 52. South southwest wind 3 to 8 mph.
Saturday
Sunny, with a high near 79. Calm wind becoming west southwest around 6 mph in the afternoon.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 57. Light south wind.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 78. Southwest wind 5 to 11 mph, with gusts as high as 22 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. West wind 5 to 7 mph becoming north after midnight.
Monday
A slight chance of showers. Mostly sunny, with a high near 73. North northwest wind 6 to 10 mph, with gusts as high as 21 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vienna IL
 37.42°N 88.88°W
Last Update:
1:26 am CDT May 5, 2026
Forecast Valid:
5am CDT May 5, 2026-6pm CDT May 11, 2026
 
Forecast Discussion
 
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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