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.

Partly Cloudy

79°F

26°C

Humidity 54%
Wind Speed N 8 mph
Barometer 29.80 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 16 Jun 2:45 pm CDT
Extended Forecast for

2 Miles S Benton IL

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 85. Southwest wind around 10 mph, with gusts as high as 18 mph.

    High: 85 °F

    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 61. Southwest wind around 6 mph becoming calm in the evening.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Windy, with a south southwest wind 6 to 16 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 89 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 73. Breezy, with a southwest wind 23 to 28 mph decreasing to 13 to 18 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 80%.

    Low: 73 °F

    Showers and
    Breezy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 85. West southwest wind 8 to 10 mph becoming northwest in the afternoon.

    High: 85 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 62. North northwest wind around 6 mph becoming calm in the evening.

    Low: 62 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 83. Calm wind becoming north northwest 5 to 7 mph in the morning.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. North wind around 5 mph becoming calm in the evening.

    Low: 62 °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

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 85. Southwest wind around 10 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 61. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 89. Windy, with a south southwest wind 6 to 16 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 40 mph.
Wednesday Night
Showers and possibly a thunderstorm. Low around 73. Breezy, with a southwest wind 23 to 28 mph decreasing to 13 to 18 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 80%.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 85. West southwest wind 8 to 10 mph becoming northwest in the afternoon.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 62. North northwest wind around 6 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 83. Calm wind becoming north northwest 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 62. 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 around 5 mph becoming calm in the evening.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 85. South wind 6 to 14 mph, with gusts as high as 20 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 20 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. West southwest wind 11 to 13 mph becoming north northwest in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Benton IL
 37.98°N 88.91°W
Last Update:
2:28 pm CDT Jun 16, 2026
Forecast Valid:
3pm CDT Jun 16, 2026-6pm CDT Jun 22, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation