National Weather Service Forecast for: Slidell LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 7:35 pm CDT Mar 15, 2026
 
Tonight

Tonight: Showers and thunderstorms, mainly before 3am. Low around 45. South wind 10 to 15 mph becoming north after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Showers
 Monday

Monday: A 10 percent chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 57. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Breezy.
Slight Chance
T-storms then
Sunny
 Monday
Night
Monday Night: Mostly cloudy, with a low around 34. North wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly Cloudy

 Tuesday

Tuesday: Sunny, with a high near 58. North wind around 5 mph.
Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 38. Calm wind.
Mostly Clear

 Wednesday

Wednesday: Mostly sunny, with a high near 66. Northeast wind around 5 mph becoming southeast in the afternoon.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 48. Southeast wind around 5 mph becoming calm.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 75. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 56. South wind around 5 mph becoming west after midnight.
Mostly Clear
Lo 45 °F Hi 57 °F Lo 34 °F Hi 58 °F Lo 38 °F Hi 66 °F Lo 48 °F Hi 75 °F Lo 56 °F

Wind Advisory
Freeze Watch
Red Flag Warning
 

Tonight
 
 Showers and thunderstorms, mainly before 3am. Low around 45. South wind 10 to 15 mph becoming north after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
 
 A 10 percent chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 57. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Monday Night
 
 Mostly cloudy, with a low around 34. North wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday
 
 Sunny, with a high near 58. North wind around 5 mph.
Tuesday Night
 
 Mostly clear, with a low around 38. Calm wind.
Wednesday
 
 Mostly sunny, with a high near 66. Northeast wind around 5 mph becoming southeast in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 48. Southeast wind around 5 mph becoming calm.
Thursday
 
 Sunny, with a high near 75. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
 
 Mostly clear, with a low around 56. South wind around 5 mph becoming west after midnight.
Friday
 
 Sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
 
 Mostly clear, with a low around 59. South wind around 5 mph becoming west after midnight.
Saturday
 
 Sunny, with a high near 83. West wind 5 to 10 mph.
Saturday Night
 
 Mostly clear, with a low around 60. West wind around 5 mph.
Sunday
 
 Sunny, with a high near 84. West wind around 5 mph becoming south in the afternoon.

 

Forecast from NOAA-NWS for Slidell LA.