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

Lafayette, Lafayette Regional Airport (KLFT)

Lat: 30.2°NLon: 91.99°WElev: 39ft.

Fair

82°F

28°C

Humidity 82%
Wind Speed SW 7 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 19 Aug 11:53 pm CDT
Extended Forecast for

3 Miles E Duson LA

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

  • Overnight

    Overnight: Partly cloudy, with a low around 76. Southwest wind around 5 mph.

    Low: 76 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 97. Heat index values as high as 109. Calm wind becoming west around 5 mph in the morning.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. Southwest wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 98. Heat index values as high as 110. Calm wind becoming west around 5 mph in the afternoon.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77. Southwest wind around 5 mph.

    Low: 77 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97. Calm wind becoming west around 5 mph.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. Calm wind becoming southwest around 5 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 76. Southwest wind around 5 mph.
Thursday
Mostly sunny and hot, with a high near 97. Heat index values as high as 109. Calm wind becoming west around 5 mph in the morning.
Thursday Night
Mostly clear, with a low around 77. Southwest wind 5 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 98. Heat index values as high as 110. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77. Southwest wind around 5 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97. Calm wind becoming west around 5 mph.
Saturday Night
Mostly clear, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny and hot, with a high near 99. Calm wind becoming southwest around 5 mph.
Sunday Night
Mostly clear, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 98.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 76.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Duson LA
 30.25°N 92.13°W
Last Update:
12:10 am CDT Aug 20, 2026
Forecast Valid:
12am CDT Aug 20, 2026-6pm CDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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