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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Slidell, Slidell Airport (KASD)

Lat: 30.34°NLon: 89.82°WElev: 30ft.

Fair

81°F

27°C

Humidity 79%
Wind Speed Calm
Barometer 30.10 in (1019.2 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 15 Aug 6:53 pm CDT
Extended Forecast for

4 Miles NE Mandeville LA

Heat Advisory August 16, 10:00am until August 16, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after noon. Increasing clouds and hot, with a high near 95. Heat index values as high as 109. Calm wind becoming north around 5 mph in the morning.

    High: 95 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny and hot, with a high near 96. Heat index values as high as 107. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 96 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 74. Calm wind. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming east around 5 mph in the afternoon.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Calm wind.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after noon. Increasing clouds and hot, with a high near 95. Heat index values as high as 109. Calm wind becoming north around 5 mph in the morning.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Calm wind.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny and hot, with a high near 96. Heat index values as high as 107. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 40%.
Sunday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 74. Calm wind. Chance of precipitation is 20%.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 74. Calm wind.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 74. Calm wind.
Wednesday
A slight chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 74. Calm wind.
Thursday
A chance of showers and thunderstorms. Sunny, with a high near 94. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind around 5 mph becoming calm.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Mandeville LA
 30.4°N 90.04°W
Last Update:
6:21 pm CDT Aug 15, 2025
Forecast Valid:
7pm CDT Aug 15, 2025-6pm CDT Aug 22, 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