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

Hazardous Weather Conditions

Current conditions at

New Orleans, New Orleans International Airport (KMSY)

Lat: 29.99°NLon: 90.25°WElev: 3ft.

Mostly Cloudy

94°F

34°C

Humidity 56%
Wind Speed W 6 mph
Barometer 29.98 in (1015.5 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 23 Aug 1:53 pm CDT
Extended Forecast for

Destrehan LA

Heat Advisory August 23, 02:37pm until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 23, 02:37pm until August 23, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 99 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 8pm. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 79. Southwest wind around 5 mph.

    Low: 79 °F

    Heavy Rain
    then Mostly
    Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 96. Heat index values as high as 112. West wind around 5 mph.

    High: 96 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 79. Southwest wind around 5 mph.

    Low: 79 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 93. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 93 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: A chance of thunderstorms before 7pm. Partly cloudy, with a low around 78. Calm wind. Chance of precipitation is 30%.

    Low: 78 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely after 1pm. Sunny and hot, with a high near 95. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 95 °F

    Sunny then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. South wind around 5 mph becoming calm.

    Low: 78 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny and hot, with a high near 99. Heat index values as high as 112. North wind around 5 mph becoming calm.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 8pm. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 79. Southwest wind around 5 mph.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 96. Heat index values as high as 112. West wind around 5 mph.
Monday Night
A 40 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 79. Southwest wind around 5 mph.
Tuesday
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 93. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 70%.
Tuesday Night
A chance of thunderstorms before 7pm. Partly cloudy, with a low around 78. Calm wind. Chance of precipitation is 30%.
Wednesday
Showers and thunderstorms likely after 1pm. Sunny and hot, with a high near 95. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78. South wind around 5 mph becoming calm.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 93. Calm wind becoming west around 5 mph in the morning.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 77. Calm wind.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming northeast around 5 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 77. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming east around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Destrehan LA
 29.95°N 90.38°W
Last Update:
1:57 pm CDT Aug 23, 2026
Forecast Valid:
2pm CDT Aug 23, 2026-6pm CDT Aug 29, 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