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.

Mostly Cloudy

79°F

26°C

Humidity 65%
Wind Speed S 12 mph
Barometer 29.94 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 16 May 2:45 pm CDT
Extended Forecast for

3 Miles NNE Vienna IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 86. South southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 86 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 66. South southeast wind 5 to 8 mph.

    Low: 66 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 88. South wind 6 to 13 mph, with gusts as high as 24 mph.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 68. South wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Increasing
    Clouds

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. South wind 9 to 15 mph, with gusts as high as 25 mph.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. South wind around 9 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 88. South southwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    High: 88 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. South southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 64 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 78. North wind 3 to 8 mph.

    High: 78 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 86. South southwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 66. South southeast wind 5 to 8 mph.
Sunday
Sunny, with a high near 88. South wind 6 to 13 mph, with gusts as high as 24 mph.
Sunday Night
Increasing clouds, with a low around 68. South wind 7 to 9 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. South wind 9 to 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 70. South wind around 9 mph, with gusts as high as 20 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 88. South southwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. South southwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 78. North wind 3 to 8 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 56. North northeast wind 3 to 7 mph.
Thursday
A slight chance of showers. Partly sunny, with a high near 74. North northeast wind around 8 mph.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 56. North northeast wind around 6 mph becoming calm in the evening.
Friday
A chance of showers. Partly sunny, with a high near 77. Northeast wind 3 to 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Vienna IL
 37.44°N 88.88°W
Last Update:
2:26 pm CDT May 16, 2026
Forecast Valid:
3pm CDT May 16, 2026-6pm CDT May 22, 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