Severe Weather and Flash Flooding From the Upper Midwest to Mid-Atlantic; Heat Continues in the Central and Southeast U.S.

Severe thunderstorms are expected this afternoon and evening across parts of the Upper Midwest to western Great Lakes. Additional severe storms will also be possible in parts of the northern Plains, central Appalachians, and Mid-Atlantic. Extreme heat is expected to intensify across much of the Southeast and Tennessee Valley today, continuing through much of this week. Read More >

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Mostly Cloudy

90°F

32°C

Humidity 71%
Wind Speed S 14 mph
Barometer 30.08 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 27 Jul 2:45 pm CDT
Extended Forecast for

New Burnside IL

Extreme Heat Watch July 29, 08:00pm until July 30, 08:00pm
Heat Advisory July 27, 03:29pm until July 28, 12:00pm
Extreme Heat Warning July 28, 12:00pm until July 29, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory
Extreme Heat Warning
  •  
    Heat Advisory July 27, 03:29pm until July 28, 12:00pm

    NOW until 12:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 76. Light south wind.

    Low: 76 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly before 3pm.  Mostly sunny, with a high near 95. Heat index values as high as 112. Light and variable wind.

    High: 95 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 77. Calm wind.

    Low: 77 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Calm wind.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. Calm wind.

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 95. Light south wind.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 92. Heat index values as high as 106. South southwest wind around 8 mph.
Tonight
Partly cloudy, with a low around 76. Light south wind.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 3pm. Mostly sunny, with a high near 95. Heat index values as high as 112. Light and variable wind.
Monday Night
Partly cloudy, with a low around 77. Calm wind.
Tuesday
Sunny and hot, with a high near 97. Calm wind.
Tuesday Night
Mostly clear, with a low around 77. Calm wind.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Light south wind.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Calm wind.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. North wind 3 to 6 mph.
Thursday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67. North northeast wind around 7 mph.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Northeast wind 7 to 10 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 64. Northeast wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 82. Northeast wind around 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
New Burnside IL
 37.57°N 88.79°W
3:01 pm CDT Jul 27, 2025
3pm CDT Jul 27, 2025-6pm CDT Aug 2, 2025
 
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Additional Resources

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