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

Heat in the Central U.S.; Heavy Rain Possible for South Texas; Monitoring Erin Tropical Impacts

Hot temperatures are forecast over the Plains and into the lower Mississippi River Valley Friday where Heat Advisories have been issued. Heavy rain from a disturbance in the western Gulf could bring flooding to south Texas. Erin could bring tropical storm conditions and heavy rain to Puerto Rico and the USVI this weekend with dangerous surf and rip currents impacting the western Atlantic Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Slidell, Slidell Airport (KASD)

Lat: 30.34°NLon: 89.82°WElev: 30ft.

Fair

83°F

28°C

Humidity 85%
Wind Speed Calm
Barometer 30.03 in (1016.9 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 14 Aug 10:53 pm CDT
Extended Forecast for

Slidell LA

Heat Advisory August 15, 10:00am until August 15, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 76. Calm wind.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Heat index values as high as 106. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 93 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers before 8pm. Mostly clear, with a low around 76. South wind around 5 mph becoming calm.

    Low: 76 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 110. Calm wind becoming northwest around 5 mph. Chance of precipitation is 40%.

    High: 95 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 95 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

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

    Low: 75 °F

    Slight Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

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

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 76. Calm wind.
Friday
A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Heat index values as high as 106. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%.
Friday Night
A 20 percent chance of showers before 8pm. Mostly clear, with a low around 76. South wind around 5 mph becoming calm.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 110. Calm wind becoming northwest around 5 mph. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 40%.
Sunday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 75. Calm wind.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 74. Calm wind.
Tuesday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 75. Calm wind.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 75. 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.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Slidell LA
 30.28°N 89.76°W
Last Update:
11:26 pm CDT Aug 14, 2025
Forecast Valid:
11pm CDT Aug 14, 2025-6pm CDT Aug 21, 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