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.

Partly Cloudy

94°F

34°C

Humidity 52%
Wind Speed N 8 G 21 mph
Barometer 29.76 in (1007.8 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 21 Jul 3:53 pm CDT
Extended Forecast for

Slidell LA

Tropical Storm Warning until further notice
Heat Advisory July 21, 03:59pm until July 21, 07:00pm
Coastal Flood Warning until July 23, 04:00am
Extreme Heat Warning July 22, 10:00am until July 22, 08:00pm
Click here for hazard details and duration
Tropical Storm Warning until further notice
Heat Advisory
Coastal Flood Warning
Extreme Heat Warning
  •  
    Tropical Storm Warning until further notice
    Heat Advisory July 21, 03:59pm until July 21, 07:00pm
    Coastal Flood Warning until July 23, 04:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 98 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 78. North wind around 5 mph.

    Low: 78 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Increasing clouds and hot, with a high near 98. Heat index values as high as 116. North wind around 10 mph, with gusts as high as 20 mph.

    High: 98 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 78. Northeast wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 78 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 94 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 77 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94. Southwest wind around 5 mph.

    High: 94 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77. Southwest wind around 5 mph.

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 98. Heat index values as high as 114. North wind around 10 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 78. North wind around 5 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Increasing clouds and hot, with a high near 98. Heat index values as high as 116. North wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
A chance of showers and thunderstorms before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 78. Northeast wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Thursday Night
A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94. Southwest wind around 5 mph.
Friday Night
Partly cloudy, with a low around 77. Southwest wind around 5 mph.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94. Southwest wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 77. Southwest wind around 5 mph.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 94. West wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 77. Southwest wind around 5 mph.
Monday
Sunny and hot, with a high near 97. West wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 78. West wind around 5 mph.
Tuesday
Sunny and hot, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Slidell LA
 30.28°N 89.81°W
Last Update:
1:26 pm CDT Jul 21, 2026
Forecast Valid:
3pm CDT Jul 21, 2026-6pm CDT Jul 28, 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