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.

Fair

48°F

9°C

Humidity 60%
Wind Speed SE 7 mph
Barometer 29.93 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 8 Jan 12:35 am CST
Extended Forecast for

Vienna IL

  • Overnight

    Overnight: Areas of fog after 5am. Otherwise, mostly cloudy, with a temperature rising to around 49 by 5am. Calm wind becoming southeast around 5 mph.

    Low: 45 °F⇑

    Areas Fog

  • Thursday

    Thursday: A 40 percent chance of showers, mainly after noon. Areas of fog before 9am. Otherwise, cloudy, with a high near 67. South wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 67 °F

    Chance
    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: Showers before 9pm, then showers and possibly a thunderstorm between 9pm and 3am, then showers after 3am. Steady temperature around 64. South wind 9 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.

    Low: 64 °F

    Showers

  • Friday

    Friday: A 30 percent chance of showers before noon. Mostly cloudy, with a high near 67. South southwest wind 5 to 8 mph becoming north in the afternoon.

    High: 67 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Showers likely, mainly after midnight. Cloudy, with a low around 44. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 60%.

    Low: 44 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers before noon. Partly sunny, with a high near 51. West northwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 51 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. West northwest wind around 7 mph.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 37. Northwest wind 5 to 10 mph becoming light in the afternoon. Winds could gust as high as 18 mph.

    High: 37 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22. Calm wind.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Overnight
Areas of fog after 5am. Otherwise, mostly cloudy, with a temperature rising to around 49 by 5am. Calm wind becoming southeast around 5 mph.
Thursday
A 40 percent chance of showers, mainly after noon. Areas of fog before 9am. Otherwise, cloudy, with a high near 67. South wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.
Thursday Night
Showers before 9pm, then showers and possibly a thunderstorm between 9pm and 3am, then showers after 3am. Steady temperature around 64. South wind 9 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.
Friday
A 30 percent chance of showers before noon. Mostly cloudy, with a high near 67. South southwest wind 5 to 8 mph becoming north in the afternoon.
Friday Night
Showers likely, mainly after midnight. Cloudy, with a low around 44. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 60%.
Saturday
A 20 percent chance of showers before noon. Partly sunny, with a high near 51. West northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 27. West northwest wind around 7 mph.
Sunday
Sunny, with a high near 37. Northwest wind 5 to 10 mph becoming light in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Mostly clear, with a low around 22. Calm wind.
Monday
Sunny, with a high near 44. Calm wind becoming south southwest 5 to 8 mph in the morning.
Monday Night
Mostly clear, with a low around 30. Southwest wind 3 to 5 mph.
Tuesday
Sunny, with a high near 51. Southwest wind 5 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 36. Southwest wind 3 to 5 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 47. Southwest wind 5 to 7 mph becoming northwest in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vienna IL
 37.42°N 88.88°W
Last Update:
10:36 pm CST Jan 7, 2026
Forecast Valid:
12am CST Jan 8, 2026-6pm CST Jan 14, 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