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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

4 Miles NE Vienna IL

  • Overnight

    Overnight: A 20 percent chance of showers before 2am. Partly cloudy, with a low around 65. South wind around 8 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 10am. Increasing clouds, with a high near 84. Southwest wind 8 to 13 mph, with gusts as high as 26 mph.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 3am, then showers likely. Low around 62. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 73. North wind 5 to 8 mph. Chance of precipitation is 50%.

    High: 73 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 57. North northeast wind 3 to 7 mph.

    Low: 57 °F

    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 74. East northeast wind 5 to 7 mph.

    High: 74 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, then showers and possibly a thunderstorm after 1am. Low around 60. East northeast wind 3 to 6 mph. Chance of precipitation is 80%.

    Low: 60 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 77. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 77 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61. Southwest wind around 6 mph becoming calm in the evening.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Overnight
A 20 percent chance of showers before 2am. Partly cloudy, with a low around 65. South wind around 8 mph, with gusts as high as 20 mph.
Tuesday
A 50 percent chance of showers and thunderstorms after 10am. Increasing clouds, with a high near 84. Southwest wind 8 to 13 mph, with gusts as high as 26 mph.
Tuesday Night
Showers and possibly a thunderstorm before 3am, then showers likely. Low around 62. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 73. North wind 5 to 8 mph. Chance of precipitation is 50%.
Wednesday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 57. North northeast wind 3 to 7 mph.
Thursday
A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 74. East northeast wind 5 to 7 mph.
Thursday Night
A chance of showers, then showers and possibly a thunderstorm after 1am. Low around 60. East northeast wind 3 to 6 mph. Chance of precipitation is 80%.
Friday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 77. Light and variable wind becoming south 5 to 7 mph in the morning.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61. Southwest wind around 6 mph becoming calm in the evening.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Calm wind becoming west southwest around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Calm wind becoming south southeast around 5 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Calm wind.
Memorial Day
Showers and thunderstorms likely. Mostly cloudy, with a high near 83. Calm wind becoming south southeast around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Vienna IL
 37.46°N 88.82°W
Last Update:
12:26 am CDT May 19, 2026
Forecast Valid:
1am CDT May 19, 2026-6pm CDT May 25, 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