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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

73°F

23°C

Humidity 96%
Wind Speed Calm
Barometer 30.17 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 25 Jun 4:55 am CDT
Extended Forecast for

Vienna IL

Heat Advisory June 25, 05:11am until June 27, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 25, 05:11am until June 27, 07:00pm

    NOW until 7:00pm Fri

    Heat Advisory

  • Today

    High: 95 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Tonight

    Tonight: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Heat index values as high as 105. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 20%.

    High: 93 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Light south southwest wind.

    Low: 75 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 93 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 11am. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 95. Heat index values as high as 108. Calm wind.
Tonight
Mostly clear, with a low around 75. Calm wind.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Heat index values as high as 105. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 75. Calm wind.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 20%.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Light south southwest wind.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. Calm wind becoming west southwest around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 75. Calm wind.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 94. Calm wind becoming southwest around 5 mph.
Sunday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 74. Calm wind.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 93. Calm wind becoming west southwest around 6 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Light west wind.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming north northwest around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vienna IL
 37.42°N 88.88°W
Last Update:
2:01 am CDT Jun 25, 2025
Forecast Valid:
5am CDT Jun 25, 2025-6pm CDT Jul 1, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation