Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Increasing Risk for Flash and River Flooding Through the Weekend

A storm system will track across the central U.S. and set the stage for severe thunderstorms and widespread heavy rainfall through the weekend. There will be a threat for flash and river flooding for portions of the Southern Plains into the Upper Midwest. Read More >

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 29.79 in
Dewpoint 68°F (20°C)
Visibility 2.50 mi
Last update 28 Apr 7:35 pm CDT
Extended Forecast for

Marion IL

Flash Flood Watch until May 1, 01:00am
Click here for hazard details and duration
Flash Flood Watch
  •  
    Flash Flood Watch until May 1, 01:00am

    NOW until
    1:00am Mon

    Flash Flood Watch

  • Tonight

    Tonight: Showers and thunderstorms. Some of the storms could produce heavy rain.  Steady temperature around 71. South wind 5 to 8 mph becoming calm  in the evening.  Chance of precipitation is 80%.

    Heavy Rain

    Low: 71 °F

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 80. South wind 7 to 13 mph.

    Chance
    T-storms

    High: 80 °F

  • Saturday
    Night

    Saturday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. South southeast wind 8 to 10 mph.

    Chance
    T-storms

    Low: 68 °F

  • Sunday

    Sunday: Showers and thunderstorms, mainly after 1pm. Some of the storms could produce heavy rain.  High near 78. South wind 10 to 16 mph, with gusts as high as 22 mph.  Chance of precipitation is 80%.

    Heavy Rain

    High: 78 °F

  • Sunday
    Night

    Sunday Night: Showers and thunderstorms before 1am, then a slight chance of showers. Some of the storms could produce heavy rain.  Low around 51. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%.

    Heavy Rain

    Low: 51 °F

  • Monday

    Monday: Mostly cloudy, with a high near 60. Southwest wind 11 to 15 mph, with gusts as high as 30 mph.

    Mostly Cloudy

    High: 60 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 48. West southwest wind 8 to 11 mph.

    Partly Cloudy

    Low: 48 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 70. West southwest wind 8 to 10 mph.

    Mostly Sunny

    High: 70 °F

Detailed Forecast

Tonight
Showers and thunderstorms. Some of the storms could produce heavy rain. Steady temperature around 71. South wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. South wind 7 to 13 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southeast wind 8 to 10 mph.
Sunday
Showers and thunderstorms, mainly after 1pm. Some of the storms could produce heavy rain. High near 78. South wind 10 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Sunday Night
Showers and thunderstorms before 1am, then a slight chance of showers. Some of the storms could produce heavy rain. Low around 51. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Monday
Mostly cloudy, with a high near 60. Southwest wind 11 to 15 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 48. West southwest wind 8 to 11 mph.
Tuesday
Mostly sunny, with a high near 70. West southwest wind 8 to 10 mph.
Tuesday Night
A chance of showers, mainly after 1am. Mostly cloudy, with a low around 51. West northwest wind around 6 mph becoming calm in the evening.
Wednesday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 65. East northeast wind 3 to 6 mph.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 48. North northeast wind around 6 mph.
Thursday
A chance of showers. Partly sunny, with a high near 64. North wind 6 to 8 mph.
Thursday Night
A chance of showers. Partly cloudy, with a low around 46. North wind around 7 mph.
Friday
A slight chance of showers. Mostly sunny, with a high near 67. North wind 6 to 10 mph.
Click Map For Forecast
Point Forecast:
Marion IL
 37.73°N 88.95°W
7:16 pm CDT Apr 28, 2017
7pm CDT Apr 28, 2017-6pm CDT May 5, 2017
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database