National Weather Service Forecast for: Slidell LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 2:02 pm CDT Jun 29, 2026
 
Tonight

Tonight: Clear, with a low around 77. Calm wind.
Clear

 Tuesday

Tuesday: A 10 percent chance of showers and thunderstorms after 5pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 110. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny then
Slight Chance
T-storms
 Tuesday
Night
Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 77. Calm wind.
Chance
T-storms
 Wednesday

Wednesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Heat index values as high as 106. Calm wind becoming southeast around 5 mph in the afternoon.
Chance
T-storms
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 93. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Mostly Clear

 Friday

Friday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.
Sunny then
Slight Chance
T-storms
 Friday
Night
Friday Night: Mostly clear, with a low around 76. South wind around 5 mph becoming calm.
Mostly Clear
Lo 77 °F Hi 97 °F Lo 77 °F Hi 93 °F Lo 76 °F Hi 93 °F Lo 76 °F Hi 94 °F Lo 76 °F

 

Tonight
 
 Clear, with a low around 77. Calm wind.
Tuesday
 
 A 10 percent chance of showers and thunderstorms after 5pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 110. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
 
 A 40 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 77. Calm wind.
Wednesday
 
 A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Heat index values as high as 106. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Thursday
 
 Sunny, with a high near 93. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Thursday Night
 
 Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Friday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
 
 Mostly clear, with a low around 76. South wind around 5 mph becoming calm.
Independence Day
 
 A chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
 
 A slight chance of showers and thunderstorms. Mostly clear, with a low around 77. South wind around 5 mph becoming calm.
Sunday
 
 A chance of showers and thunderstorms. Sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm in the evening.
Monday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.

 

Forecast from NOAA-NWS for Slidell LA.