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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

68°F

20°C

Humidity 86%
Wind Speed Calm
Barometer 29.78 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 16 Jun 11:15 pm CDT
Extended Forecast for

Valier IL

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 91. Windy, with a south southwest wind 6 to 16 mph increasing to 21 to 31 mph. Winds could gust as high as 41 mph.

    High: 91 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms, mainly before 3am. Low around 73. Breezy, with a west southwest wind 23 to 28 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 80%.

    Low: 73 °F

    Showers and
    Breezy

  • Thursday

    Thursday: A slight chance of showers before 11am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. West wind 6 to 8 mph becoming north northwest in the afternoon. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 63. North northwest wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 84. Calm wind becoming north northwest 5 to 7 mph in the morning.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. North wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. South southeast wind 3 to 6 mph.

    Low: 67 °F

    Mostly Clear
    then Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 62. Calm wind.
Wednesday
Sunny, with a high near 91. Windy, with a south southwest wind 6 to 16 mph increasing to 21 to 31 mph. Winds could gust as high as 41 mph.
Wednesday Night
Showers and thunderstorms, mainly before 3am. Low around 73. Breezy, with a west southwest wind 23 to 28 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 80%.
Thursday
A slight chance of showers before 11am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. West wind 6 to 8 mph becoming north northwest in the afternoon. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 63. North northwest wind around 6 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 84. Calm wind becoming north northwest 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 63. North wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. South southeast wind 3 to 6 mph.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. South wind 7 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. South southwest wind 10 to 15 mph, with gusts as high as 21 mph.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Northeast wind around 11 mph becoming west northwest in the morning.
Monday Night
A chance of showers. Partly cloudy, with a low around 66. North northeast wind 3 to 8 mph.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. North wind around 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Valier IL
 38.03°N 89.04°W
Last Update:
11:21 pm CDT Jun 16, 2026
Forecast Valid:
11pm CDT Jun 16, 2026-6pm CDT Jun 23, 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