Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

75°F

24°C

Humidity 94%
Wind Speed NE 3 mph
Barometer 29.99 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 16 Jun 11:45 am CDT
Extended Forecast for

4 Miles ENE Vienna IL

Flood Watch until June 17, 12:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until June 17, 12:00am

    NOW until 12:00am Tue

    Flood Watch

  • Today

    High: 82 °F

    Heavy Rain

  • Tonight

    Tonight: Showers and thunderstorms likely before 7pm, then showers likely and possibly a thunderstorm between 7pm and 9pm, then a chance of showers and thunderstorms after 9pm. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a low around 70. Light south wind.  Chance of precipitation is 60%.

    Low: 70 °F

    Heavy Rain

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms.  Cloudy, then gradually becoming mostly sunny, with a high near 86. South southwest wind 5 to 7 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 73. South southwest wind 3 to 6 mph.

    Low: 73 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 89. South southwest wind 8 to 14 mph, with gusts as high as 25 mph.

    High: 89 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 71. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%.

    Low: 71 °F

    Showers
    Likely

  • Juneteenth

    Juneteenth: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 86. West northwest wind around 5 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Thursday Night

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

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Today
Showers and thunderstorms, mainly before 4pm. Some of the storms could produce heavy rainfall. High near 82. Light and variable wind becoming south around 6 mph in the afternoon. Chance of precipitation is 80%.
Tonight
Showers and thunderstorms likely before 7pm, then showers likely and possibly a thunderstorm between 7pm and 9pm, then a chance of showers and thunderstorms after 9pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 70. Light south wind. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of showers and thunderstorms. Cloudy, then gradually becoming mostly sunny, with a high near 86. South southwest wind 5 to 7 mph.
Tuesday Night
Increasing clouds, with a low around 73. South southwest wind 3 to 6 mph.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89. South southwest wind 8 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Juneteenth
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. West northwest wind around 5 mph.
Thursday Night
Mostly clear, with a low around 68. Calm wind.
Friday
Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 72. Light south wind.
Saturday
Sunny, with a high near 92. Light south wind becoming south southwest 5 to 9 mph in the morning.
Saturday Night
Mostly clear, with a low around 75. South wind 3 to 6 mph.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 92. South southwest wind 3 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Vienna IL
 37.44°N 88.82°W
11:16 am CDT Jun 16, 2025
11am CDT Jun 16, 2025-6pm CDT Jun 22, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database