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

66°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 29.77 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 17 Jun 1:55 am CDT
Extended Forecast for

Valier IL

Wind Advisory June 17, 01:00pm until June 17, 08:00pm
Click here for hazard details and duration
Wind Advisory

  • Overnight

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

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 91. Breezy, with a south southwest wind 6 to 16 mph increasing to 19 to 29 mph in the afternoon. Winds could gust as high as 44 mph.

    High: 91 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms, mainly before 3am. Low around 72. Breezy, with a west southwest wind 20 to 25 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%.

    Low: 72 °F

    Showers and
    Breezy

  • Thursday

    Thursday: A 20 percent chance of showers before 11am. Mostly sunny, with a high near 86. West wind 6 to 8 mph becoming north northwest in the afternoon.

    High: 86 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 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

    Slight Chance
    Showers

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 85. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Light and variable wind.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South southeast wind 3 to 6 mph.

    Low: 68 °F

    Mostly Clear
    then Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 62. Calm wind.
Wednesday
Sunny, with a high near 91. Breezy, with a south southwest wind 6 to 16 mph increasing to 19 to 29 mph in the afternoon. Winds could gust as high as 44 mph.
Wednesday Night
Showers and thunderstorms, mainly before 3am. Low around 72. Breezy, with a west southwest wind 20 to 25 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%.
Thursday
A 20 percent chance of showers before 11am. Mostly sunny, with a high near 86. West wind 6 to 8 mph becoming north northwest in the afternoon.
Thursday Night
A 20 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
Mostly sunny, with a high near 85. Calm wind becoming north northwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 63. Light and variable wind.
Saturday
Mostly sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South southeast wind 3 to 6 mph.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 87. Southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 70. West southwest wind 13 to 17 mph, with gusts as high as 22 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. West southwest wind 11 to 14 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. North wind 6 to 11 mph becoming light north northeast.
Tuesday
A slight chance of showers. 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:
1:46 am CDT Jun 17, 2026
Forecast Valid:
2am CDT Jun 17, 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