National Weather Service Forecast for: Slidell LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 10:21 am CDT May 26, 2026
 
Today

Today: Showers and possibly a thunderstorm. High near 84. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely then
T-storms
 Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 73. Southeast wind around 5 mph.
Chance
T-storms then
Mostly Cloudy
 Wednesday

Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 87. Light southeast wind becoming south 5 to 10 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Showers
Likely
 Wednesday
Night
Wednesday Night: Showers and thunderstorms likely before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Showers
Likely

 Thursday

Thursday: Showers and possibly a thunderstorm. High near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 90%.
Showers then
T-storms

 Thursday
Night
Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%.
Chance
T-storms then
Showers
Likely
 Friday

Friday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%.
Showers
Likely

 Friday
Night
Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 71. South wind around 5 mph becoming calm. Chance of precipitation is 40%.
Chance
Showers

 Saturday

Saturday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon.
Chance
T-storms
Hi 84 °F Lo 73 °F Hi 87 °F Lo 73 °F Hi 84 °F Lo 72 °F Hi 86 °F Lo 71 °F Hi 87 °F

Flood Watch
 

Today
 
 Showers and possibly a thunderstorm. High near 84. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 73. Southeast wind around 5 mph.
Wednesday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 87. Light southeast wind becoming south 5 to 10 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and thunderstorms likely before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Thursday
 
 Showers and possibly a thunderstorm. High near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 90%.
Thursday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%.
Friday
 
 Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%.
Friday Night
 
 A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 71. South wind around 5 mph becoming calm. Chance of precipitation is 40%.
Saturday
 
 A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
 
 A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm.
Sunday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 71. South wind around 5 mph becoming calm.
Monday
 
 Showers and thunderstorms likely. Partly sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon.

 

Forecast from NOAA-NWS for Slidell LA.