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

Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Acadiana Regional Airport (KARA)

Lat: 30.03°NLon: 91.88°WElev: 13ft.

Fair

72°F

22°C

Humidity 97%
Wind Speed Calm
Barometer 30.02 in (1016.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 20 Aug 6:53 am CDT
Extended Forecast for

23 Miles S Cow Island LA

Heat Advisory August 20, 12:00pm until August 20, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny, with a high near 90. Heat index values as high as 106. Southwest wind 10 to 15 mph.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 83. Southwest wind around 10 mph.

    Low: 83 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 91. Heat index values as high as 111. West wind 10 to 15 mph.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 83. West wind 10 to 15 mph.

    Low: 83 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91. West wind around 10 mph.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 83. West wind 10 to 15 mph.

    Low: 83 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 91. West wind around 10 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 83. Southwest wind 5 to 10 mph.

    Low: 83 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Southwest wind 5 to 10 mph.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 90. Heat index values as high as 106. Southwest wind 10 to 15 mph.
Tonight
Partly cloudy, with a low around 83. Southwest wind around 10 mph.
Friday
Mostly sunny, with a high near 91. Heat index values as high as 111. West wind 10 to 15 mph.
Friday Night
Mostly clear, with a low around 83. West wind 10 to 15 mph.
Saturday
Sunny, with a high near 91. West wind around 10 mph.
Saturday Night
Partly cloudy, with a low around 83. West wind 10 to 15 mph.
Sunday
Sunny, with a high near 91. West wind around 10 mph.
Sunday Night
Mostly clear, with a low around 83. Southwest wind 5 to 10 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Southwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 83.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 82.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
23 Miles S Cow Island LA
 29.56°N 92.2°W
Last Update:
6:45 am CDT Aug 20, 2026
Forecast Valid:
7am CDT Aug 20, 2026-6pm CDT Aug 26, 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