National Weather Service Forecast for: Slidell LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 2:01 am CDT Jun 22, 2026
 
Today

Today: Mostly sunny, with a high near 93. Heat index values as high as 106. Southwest wind 5 to 10 mph.
Mostly Sunny

 Tonight

Tonight: Partly cloudy, with a low around 78. Southwest wind around 5 mph.
Partly Cloudy

 Tuesday

Tuesday: Mostly sunny and hot, with a high near 95. Heat index values as high as 107. Southwest wind around 5 mph.
Hot

 Tuesday
Night
Tuesday Night: Increasing clouds, with a low around 77. Calm wind becoming west around 5 mph after midnight.
Increasing
Clouds

 Wednesday

Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. West wind around 5 mph.
Mostly Sunny
then Slight
Chance
T-storms
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 76. South wind around 5 mph becoming calm.
Partly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 94. West wind around 5 mph becoming southwest in the afternoon.
Mostly Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 76. South wind around 5 mph becoming calm after midnight.
Mostly Clear

 Friday

Friday: Sunny, with a high near 93. Light southwest wind becoming south 5 to 10 mph in the afternoon.
Sunny
Hi 93 °F Lo 78 °F Hi 95 °F Lo 77 °F Hi 94 °F Lo 76 °F Hi 94 °F Lo 76 °F Hi 93 °F

Heat Advisory
 

Today
 
 Mostly sunny, with a high near 93. Heat index values as high as 106. Southwest wind 5 to 10 mph.
Tonight
 
 Partly cloudy, with a low around 78. Southwest wind around 5 mph.
Tuesday
 
 Mostly sunny and hot, with a high near 95. Heat index values as high as 107. Southwest wind around 5 mph.
Tuesday Night
 
 Increasing clouds, with a low around 77. Calm wind becoming west around 5 mph after midnight.
Wednesday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. West wind around 5 mph.
Wednesday Night
 
 Partly cloudy, with a low around 76. South wind around 5 mph becoming calm.
Thursday
 
 Mostly sunny, with a high near 94. West wind around 5 mph becoming southwest in the afternoon.
Thursday Night
 
 Mostly clear, with a low around 76. South wind around 5 mph becoming calm after midnight.
Friday
 
 Sunny, with a high near 93. Light southwest wind becoming south 5 to 10 mph in the afternoon.
Friday Night
 
 Mostly clear, with a low around 77. South wind around 5 mph.
Saturday
 
 Sunny, with a high near 94. Light southwest wind becoming south 5 to 10 mph in the afternoon.
Saturday Night
 
 Mostly clear, with a low around 78. South wind around 5 mph.
Sunday
 
 Sunny, with a high near 94. Light southwest wind becoming south 5 to 10 mph in the afternoon.

 

Forecast from NOAA-NWS for Slidell LA.