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

78°F

26°C

Humidity 87%
Wind Speed SW 5 mph
Barometer 30.00 in (1015.8 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 20 Aug 4:53 am CDT
Extended Forecast for

Cecilia LA

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

  • Today

    Today: Sunny and hot, with a high near 98. Heat index values as high as 109. West wind around 5 mph.

    High: 98 °F

    Hot

  • Tonight

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

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and hot, with a high near 99. Heat index values as high as 113. West wind around 5 mph.

    High: 99 °F

    Hot

  • Friday Night

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

    Low: 77 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Northwest wind around 5 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. West wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 100. Calm wind becoming northwest around 5 mph.

    High: 100 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. Southwest wind around 5 mph.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 98. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 98 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 98. Heat index values as high as 109. West wind around 5 mph.
Tonight
Mostly clear, with a low around 77. Southwest wind 5 to 10 mph.
Friday
Mostly sunny and hot, with a high near 99. Heat index values as high as 113. West wind around 5 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 77. West wind around 5 mph.
Saturday
Sunny and hot, with a high near 100. Northwest wind around 5 mph.
Saturday Night
Mostly clear, with a low around 76. West wind around 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 100. Calm wind becoming northwest around 5 mph.
Sunday Night
Mostly clear, with a low around 77. Southwest wind around 5 mph.
Monday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 98. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
A 30 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 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cecilia LA
 30.33°N 91.86°W
Last Update:
2:46 am CDT Aug 20, 2026
Forecast Valid:
5am 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