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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Hazardous Weather Conditions

Current conditions at

Slidell, Slidell Airport (KASD)

Lat: 30.34°NLon: 89.82°WElev: 30ft.

Mostly Cloudy

82°F

28°C

Humidity 88%
Wind Speed S 5 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 20 Jun 8:53 am CDT
Extended Forecast for

Slidell LA

Heat Advisory June 20, 12:00pm until June 20, 06:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 91. Southwest wind around 5 mph becoming south in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Partly Sunny
    then T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 10pm, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 77. East wind around 5 mph becoming south after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 77 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 9am. Mostly sunny, with a high near 91. South wind 5 to 10 mph.

    High: 91 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 79. South wind 5 to 10 mph.

    Low: 79 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 94. Southwest wind 5 to 10 mph.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 78. South wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 95. West wind around 5 mph.

    High: 95 °F

    Hot

  • Tuesday Night

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

    Low: 77 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. West wind around 5 mph.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 91. Southwest wind around 5 mph becoming south in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 10pm, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 77. East wind around 5 mph becoming south after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 20 percent chance of showers and thunderstorms before 9am. Mostly sunny, with a high near 91. South wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 79. South wind 5 to 10 mph.
Monday
Sunny, with a high near 94. Southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 78. South wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 95. West wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 77. Southwest wind around 5 mph.
Wednesday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. West wind around 5 mph.
Wednesday Night
A slight chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 75. West wind around 5 mph becoming calm.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Slidell LA
 30.28°N 89.79°W
Last Update:
3:36 am CDT Jun 20, 2026
Forecast Valid:
9am CDT Jun 20, 2026-6pm CDT Jun 26, 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