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

Heavy Rainfall Across South Texas and the Northeast; Thunderstorms in the Southern Appalachians and Rio Grande Valley

Widespread showers and thunderstorms producing heavy rain may bring flooding to South Texas and parts of the Northeast U.S. tonight into Friday morning. Scattered severe thunderstorms with damaging gusts and large hail are expected over parts of the southern Appalachians, and Rio Grande Valley of Texas into Friday morning. Read More >

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Mostly Cloudy

55°F

13°C

Humidity 94%
Wind Speed N 8 mph
Barometer 30.09 in
Dewpoint 54°F (12°C)
Visibility 7.00 mi
Wind Chill53°F (12°C)
Last update 9 May 6:45 am CDT
Extended Forecast for

Carterville IL

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 69. North northeast wind 8 to 11 mph.

    High: 69 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 46. North northeast wind 3 to 6 mph.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 72. Northeast wind 3 to 8 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. Light northeast wind.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 75. East northeast wind 5 to 7 mph.

    High: 75 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 59. East northeast wind 3 to 6 mph.

    Low: 59 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. East wind 5 to 7 mph. Chance of precipitation is 70%.

    High: 74 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 60. East wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 76. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 76 °F

    Showers
    Likely

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 69. North northeast wind 8 to 11 mph.
Tonight
Mostly clear, with a low around 46. North northeast wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 72. Northeast wind 3 to 8 mph.
Saturday Night
Partly cloudy, with a low around 53. Light northeast wind.
Sunday
Partly sunny, with a high near 75. East northeast wind 5 to 7 mph.
Sunday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 59. East northeast wind 3 to 6 mph.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. East wind 5 to 7 mph. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 60. East wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 76. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 61. Light south wind.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 82. Light south southeast wind becoming south 5 to 9 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 67. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 88. South southwest wind 6 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carterville IL
 37.78°N 89.09°W
Last Update:
5:46 am CDT May 9, 2025
Forecast Valid:
6am CDT May 9, 2025-6pm CDT May 15, 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