National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Weather Threats Across the Plains; Dangerous Heat and Wildfire Concerns for the West; Watching the Tropics

Severe thunderstorms are expected across the Central Plains accompanied by damaging wind gusts and large hail. In addition, heavy rainfall may lead to instances of flash flooding from the Plains and mid-Atlantic regions. The heavy rainfall threat continues across Florida and across the northern Gulf as we monitor a tropical disturbance tracking westward. Critical fire weather for the Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

88°F

31°C

Humidity 66%
Wind Speed S 7 mph
Barometer 29.95 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 15 Jul 4:45 pm CDT
Extended Forecast for

3 Miles NNE Vienna IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely. Partly sunny, with a steady temperature around 86. South southwest wind around 6 mph. Chance of precipitation is 60%.

    High: 86 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, with a low around 73. Light south southwest wind. Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 105. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 92 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. South southwest wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 93. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 40%.

    High: 93 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 90. Light and variable wind.

    High: 90 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 90 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely. Partly sunny, with a steady temperature around 86. South southwest wind around 6 mph. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, with a low around 73. Light south southwest wind. Chance of precipitation is 60%.
Wednesday
A slight chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 105. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 75. South southwest wind around 5 mph becoming calm in the evening.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 93. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 40%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 90. Light and variable wind.
Friday Night
A slight chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74. Calm wind.
Saturday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 7 mph in the morning.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Light south wind.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the morning.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Light south wind.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 92. Calm wind becoming south around 5 mph in the morning.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Light south wind.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 94. Calm wind becoming southwest 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Vienna IL
 37.44°N 88.88°W
Last Update:
4:31 pm CDT Jul 15, 2025
Forecast Valid:
5pm CDT Jul 15, 2025-6pm CDT Jul 22, 2025
 
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