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

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 23 Aug 12:55 am CDT
Extended Forecast for

3 Miles NNE Vienna IL

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, clear, with a low around 63. Calm wind.

    Low: 63 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. Light north wind.

    High: 88 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 83. North northwest wind 5 to 8 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 56. North wind around 6 mph becoming calm in the evening.

    Low: 56 °F

    Clear

  • Monday

    Monday: Mostly sunny, with a high near 80. Calm wind becoming north northwest around 6 mph in the morning.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55. Light north wind.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 53. Light north northeast wind.

    Low: 53 °F

    Clear

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, clear, with a low around 63. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. Light north wind.
Saturday Night
Partly cloudy, with a low around 64. Calm wind.
Sunday
Sunny, with a high near 83. North northwest wind 5 to 8 mph.
Sunday Night
Clear, with a low around 56. North wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 80. Calm wind becoming north northwest around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 55. Light north wind.
Tuesday
Sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 53. Light north northeast wind.
Wednesday
Sunny, with a high near 81. Light north northeast wind.
Wednesday Night
Partly cloudy, with a low around 56. Calm wind.
Thursday
Mostly sunny, with a high near 82. Light east southeast wind.
Thursday Night
Partly cloudy, with a low around 58. Calm wind.
Friday
A slight chance of showers. Mostly sunny, with a high near 83. Calm wind becoming east southeast around 5 mph 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:
10:16 pm CDT Aug 22, 2025
Forecast Valid:
1am CDT Aug 23, 2025-6pm CDT Aug 29, 2025
 
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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