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

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Mostly Cloudy

84°F

29°C

Humidity 74%
Wind Speed N 8 mph
Barometer 30.08 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 14 Aug 9:45 am CDT
Extended Forecast for

New Burnside IL

Extreme Heat Warning August 14, 10:06am until August 16, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 14, 10:06am until August 16, 08:00pm

    NOW until 8:00pm Sun

    Extreme Heat Warning

  • Today

    High: 96 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. South wind 3 to 5 mph.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 98. Southwest wind around 6 mph.

    High: 98 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South southwest wind 3 to 6 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. Southwest wind around 7 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74. Light and variable wind.

    Low: 74 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. North wind 3 to 7 mph.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. North wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 96. Heat index values as high as 105. South southwest wind around 7 mph.
Tonight
Mostly clear, with a low around 76. South wind 3 to 5 mph.
Saturday
Sunny and hot, with a high near 98. Southwest wind around 6 mph.
Saturday Night
Mostly clear, with a low around 76. South southwest wind 3 to 6 mph.
Sunday
Sunny and hot, with a high near 99. Southwest wind around 7 mph.
Sunday Night
Partly cloudy, with a low around 74. Light and variable wind.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. North wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 68. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 89. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 70. Calm wind.
Wednesday
Sunny, with a high near 94. Light south wind becoming south southwest 5 to 9 mph in the morning.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 91. North northwest wind 5 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Burnside IL
 37.57°N 88.76°W
Last Update:
7:01 am CDT Aug 14, 2026
Forecast Valid:
10am CDT Aug 14, 2026-6pm CDT Aug 20, 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