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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

New Orleans, New Orleans International Airport (KMSY)

Lat: 29.99°NLon: 90.25°WElev: 3ft.

Mostly Cloudy

98°F

37°C

Humidity 43%
Wind Speed Vrbl 7 mph
Barometer 29.92 in (1013.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 17 Aug 4:53 pm CDT
Extended Forecast for

Destrehan LA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Sunny, with a steady temperature around 91. North wind around 5 mph.

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 78. Calm wind.

    Low: 78 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 106. Calm wind becoming northeast around 5 mph in the morning.

    High: 94 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 78. South wind around 5 mph becoming calm.

    Low: 78 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming northeast around 5 mph in the morning.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. Southeast wind around 5 mph becoming calm in the evening.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny and hot, with a high near 95. Calm wind becoming northeast around 5 mph in the morning. Chance of precipitation is 30%.

    High: 95 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 94. Calm wind becoming north around 5 mph in the afternoon.

    High: 94 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Sunny, with a steady temperature around 91. North wind around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 78. Calm wind.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 106. Calm wind becoming northeast around 5 mph in the morning.
Monday Night
Partly cloudy, with a low around 78. South wind around 5 mph becoming calm.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming northeast around 5 mph in the morning.
Tuesday Night
Mostly clear, with a low around 78. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny and hot, with a high near 95. Calm wind becoming northeast around 5 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.
Thursday
A chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 94. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm in the evening.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm.
Saturday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm in the evening.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Destrehan LA
 29.95°N 90.35°W
Last Update:
12:26 pm CDT Aug 17, 2025
Forecast Valid:
5pm CDT Aug 17, 2025-6pm CDT Aug 24, 2025
 
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