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.

A Few Clouds

16°C

61°F

Humidity 39%
Wind Speed N 11 km/h
Barometer 29.96 in
Dewpoint 2°C (36°F)
Visibility 16 km
Last update 13 Mar 6:45 pm CDT
Extended Forecast for

3 Miles NNE Vienna IL

  • Tonight

    Tonight: Mostly clear, with a low around 4. Calm wind.

    Low: 4 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 20. East wind 5 to 14 km/h becoming south in the afternoon.

    High: 20 °C

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 13. South wind 10 to 16 km/h, with gusts as high as 34 km/h.

    Low: 13 °C

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 22. Breezy, with a south wind 21 to 26 km/h increasing to 32 to 37 km/h in the afternoon. Winds could gust as high as 65 km/h. Chance of precipitation is 50%.

    High: 22 °C

    Breezy.
    Mostly Cloudy
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around -3. Breezy, with a south wind 23 to 32 km/h becoming west northwest after midnight. Winds could gust as high as 60 km/h. Chance of precipitation is 100%.

    Low: -3 °C

    Showers and
    Breezy then
    Rain/Snow

  • Monday

    Monday: A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 2. West northwest wind 24 to 26 km/h, with gusts as high as 47 km/h.

    High: 2 °C

    Slight Chance
    Snow Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around -9. West northwest wind 16 to 21 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 37 km/h.

    Low: -9 °C

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 4. West northwest wind 8 to 10 km/h.

    High: 4 °C

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around -2. Light south wind increasing to 6 to 11 km/h in the evening.

    Low: -2 °C

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 4. Calm wind.
Saturday
Sunny, with a high near 20. East wind 5 to 14 km/h becoming south in the afternoon.
Saturday Night
Increasing clouds, with a low around 13. South wind 10 to 16 km/h, with gusts as high as 34 km/h.
Sunday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 22. Breezy, with a south wind 21 to 26 km/h increasing to 32 to 37 km/h in the afternoon. Winds could gust as high as 65 km/h. Chance of precipitation is 50%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around -3. Breezy, with a south wind 23 to 32 km/h becoming west northwest after midnight. Winds could gust as high as 60 km/h. Chance of precipitation is 100%.
Monday
A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 2. West northwest wind 24 to 26 km/h, with gusts as high as 47 km/h.
Monday Night
Mostly clear, with a low around -9. West northwest wind 16 to 21 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 37 km/h.
Tuesday
Sunny, with a high near 4. West northwest wind 8 to 10 km/h.
Tuesday Night
A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around -2. Light south wind increasing to 6 to 11 km/h in the evening.
Wednesday
A slight chance of showers before 1pm. Partly sunny, with a high near 14. South southwest wind 13 to 21 km/h, with gusts as high as 37 km/h.
Wednesday Night
Mostly clear, with a low around 5. South southwest wind 5 to 10 km/h becoming calm after midnight.
Thursday
Sunny, with a high near 21. Calm wind becoming west southwest 5 to 10 km/h in the morning.
Thursday Night
Mostly clear, with a low around 8. Calm wind.
Friday
Mostly sunny, with a high near 21. South southwest wind 5 to 11 km/h becoming west in the afternoon.
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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:
1:26 pm CDT Mar 13, 2026
Forecast Valid:
7pm CDT Mar 13, 2026-6pm CDT Mar 20, 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