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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Mostly Cloudy

73°F

23°C

Humidity 89%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 6 Jun 10:45 am CDT
Extended Forecast for

Marion IL

  • Today

    Today: Showers and thunderstorms likely, mainly after 2pm. Mostly cloudy, with a high near 79. Light and variable wind becoming west around 6 mph in the afternoon. Chance of precipitation is 70%.

    High: 79 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 67. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 67 °F

    T-storms
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming south southwest 5 to 7 mph in the afternoon. Chance of precipitation is 70%.

    High: 80 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 66. South southwest wind around 6 mph becoming light and variable. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 83. West northwest wind 6 to 8 mph.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 65. West southwest wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. West southwest wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. Southwest wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 80. West northwest wind 3 to 7 mph.

    High: 80 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 2pm. Mostly cloudy, with a high near 79. Light and variable wind becoming west around 6 mph in the afternoon. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 67. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming south southwest 5 to 7 mph in the afternoon. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 66. South southwest wind around 6 mph becoming light and variable. Chance of precipitation is 50%.
Sunday
Mostly sunny, with a high near 83. West northwest wind 6 to 8 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 65. West southwest wind around 5 mph becoming calm in the evening.
Monday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. West southwest wind 3 to 7 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 60. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 80. West northwest wind 3 to 7 mph.
Tuesday Night
Clear, with a low around 59. Light and variable wind.
Wednesday
Sunny, with a high near 83. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 64. Calm wind.
Thursday
A slight chance of showers. Partly sunny, with a high near 83. Calm wind becoming south southeast around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.76°N 88.97°W
Last Update:
8:51 am CDT Jun 6, 2025
Forecast Valid:
11am CDT Jun 6, 2025-6pm CDT Jun 12, 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