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

Hazardous Weather Conditions

Current conditions at

Slidell, Slidell Airport (KASD)

Lat: 30.34°NLon: 89.82°WElev: 30ft.

Fair

87°F

31°C

Humidity 72%
Wind Speed N 5 mph
Barometer 30.02 in (1016.6 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 23 Aug 9:53 am CDT
Extended Forecast for

Slidell LA

Heat Advisory August 23, 11:00am until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 99. Heat index values as high as 111. North wind around 5 mph becoming south in the afternoon.

    High: 99 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, then gradually becoming clear, with a low around 77. Calm wind becoming southwest around 5 mph.

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny and hot, with a high near 96. Heat index values as high as 110. Calm wind becoming west around 5 mph in the afternoon.

    High: 96 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 76. Calm wind.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

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

    High: 93 °F

    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: A chance of thunderstorms before 7pm. Partly cloudy, with a low around 76. Calm wind. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely after 1pm. Sunny, with a high near 94. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 94 °F

    Sunny then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 76. Calm wind. Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph.

    High: 92 °F

    T-storms
    Likely

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 99. Heat index values as high as 111. North wind around 5 mph becoming south in the afternoon.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, then gradually becoming clear, with a low around 77. Calm wind becoming southwest around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny and hot, with a high near 96. Heat index values as high as 110. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 76. Calm wind.
Tuesday
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 93. Calm wind becoming north around 5 mph. Chance of precipitation is 70%.
Tuesday Night
A chance of thunderstorms before 7pm. Partly cloudy, with a low around 76. Calm wind. Chance of precipitation is 30%.
Wednesday
Showers and thunderstorms likely after 1pm. Sunny, with a high near 94. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 76. Calm wind. Chance of precipitation is 20%.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Calm wind.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming southwest around 5 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 74. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming southeast around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Slidell LA
 30.3°N 89.78°W
Last Update:
10:25 am CDT Aug 23, 2026
Forecast Valid:
10am 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