Heavy Rainfall Along the Central Gulf Coast; Thunderstorms from the Plains to the Central Appalachians; Heat Across the East

A system in the Gulf could produce heavy rainfall and flash flooding for portions of the north-central Gulf Coast into Saturday. Widespread showers and thunderstorms are likely this afternoon into Friday from Central Plains into the mid-Mississippi Valley, Ohio Valley and Central Appalachians. Dangerous heat is expected from the Lower Mississippi Valley to the Mid-Atlantic today. Read More >

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

A Few Clouds

82°F

28°C

Humidity 84%
Wind Speed S 7 mph
Barometer 30.01 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 17 Jul 8:45 am CDT
Extended Forecast for

2 Miles N Buncombe IL

Heat Advisory July 17, 12:00pm until July 17, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Showers and thunderstorms likely, mainly after 4pm.  Partly sunny, with a high near 89. West southwest wind around 6 mph.  Chance of precipitation is 60%.

    High: 89 °F

    Mostly Sunny
    then T-storms
    Likely

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 73. Light and variable wind.

    Low: 73 °F

    Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 87. Light south wind.  Chance of precipitation is 70%.

    High: 87 °F

    T-storms
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 74. Light south southeast wind.

    Low: 74 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 89. Southwest wind 5 to 7 mph.

    High: 89 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. South southwest wind 3 to 5 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 90. Southwest wind 3 to 5 mph.

    High: 90 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 76. Light south wind.

    Low: 76 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 92. South southwest wind 3 to 6 mph.

    High: 92 °F

    Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 89. West southwest wind around 6 mph. Chance of precipitation is 60%.
Tonight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Light and variable wind.
Friday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 87. Light south wind. Chance of precipitation is 70%.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Light south southeast wind.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89. Southwest wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 75. South southwest wind 3 to 5 mph.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. Southwest wind 3 to 5 mph.
Sunday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 76. Light south wind.
Monday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. South southwest wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 76. South wind 3 to 5 mph.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 93. South southwest wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 77. South wind 3 to 5 mph.
Wednesday
Sunny, with a high near 95. Calm wind becoming southwest around 5 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Buncombe IL
 37.51°N 88.96°W
7:31 am CDT Jul 17, 2025
9am CDT Jul 17, 2025-6pm CDT Jul 23, 2025
 
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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