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

84°F

29°C

Humidity 45%
Wind Speed NW 8 mph
Barometer 29.84 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 18 Jun 1:45 pm CDT
Extended Forecast for

4 Miles W Vienna IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 86. North wind around 6 mph.

    High: 86 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Light north wind.

    Low: 63 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 84. Light north wind.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 85. Calm wind becoming south around 5 mph.

    High: 85 °F

    Sunny

  • Saturday Night

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

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 70%.

    High: 85 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 70. South wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 70 °F

    Showers

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. West southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 86. North wind around 6 mph.
Tonight
Partly cloudy, with a low around 63. Light north wind.
Juneteenth
Mostly sunny, with a high near 84. Light north wind.
Friday Night
Partly cloudy, with a low around 63. Calm wind.
Saturday
Sunny, with a high near 85. Calm wind becoming south around 5 mph.
Saturday Night
Mostly clear, with a low around 67. Calm wind.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 70. South wind 9 to 11 mph, with gusts as high as 21 mph.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. West southwest wind around 10 mph, with gusts as high as 20 mph.
Monday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 63. North wind 5 to 7 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Light north northwest wind.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 63. Calm wind.
Wednesday
Mostly sunny, with a high near 83. Light north wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Vienna IL
 37.4°N 88.97°W
Last Update:
1:26 pm CDT Jun 18, 2026
Forecast Valid:
2pm CDT Jun 18, 2026-6pm CDT Jun 24, 2026
 
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Additional Resources

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Chance of Precipitation