National Weather Service Forecast for: Port Allen LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 2:02 am CDT Apr 6, 2026
 
Overnight

Overnight: A 20 percent chance of showers. Cloudy, with a steady temperature around 58. Northeast wind 5 to 10 mph.
Slight Chance
Showers
 Monday

Monday: Cloudy through mid morning, then gradual clearing, with a high near 71. Northeast wind around 10 mph.
Gradual
Clearing
 Monday
Night
Monday Night: Mostly clear, with a low around 49. Northeast wind around 5 mph.
Mostly Clear

 Tuesday

Tuesday: Mostly sunny, with a high near 76. Northeast wind 5 to 10 mph.
Mostly Sunny

 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 55. Northeast wind around 5 mph.
Mostly Cloudy

 Wednesday

Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. East wind 5 to 15 mph.
Partly Sunny
then Chance
Showers
 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. East wind 5 to 10 mph. Chance of precipitation is 30%.
Chance
Showers
 Thursday

Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Chance
Showers
 Thursday
Night
Thursday Night: A slight chance of showers. Mostly cloudy, with a low around 63. East wind 5 to 10 mph.
Slight Chance
Showers
Lo 58 °F Hi 71 °F Lo 49 °F Hi 76 °F Lo 55 °F Hi 77 °F Lo 62 °F Hi 76 °F Lo 63 °F

 

Overnight
 
 A 20 percent chance of showers. Cloudy, with a steady temperature around 58. Northeast wind 5 to 10 mph.
Monday
 
 Cloudy through mid morning, then gradual clearing, with a high near 71. Northeast wind around 10 mph.
Monday Night
 
 Mostly clear, with a low around 49. Northeast wind around 5 mph.
Tuesday
 
 Mostly sunny, with a high near 76. Northeast wind 5 to 10 mph.
Tuesday Night
 
 Mostly cloudy, with a low around 55. Northeast wind around 5 mph.
Wednesday
 
 A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. East wind 5 to 15 mph.
Wednesday Night
 
 A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. East wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday
 
 A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Thursday Night
 
 A slight chance of showers. Mostly cloudy, with a low around 63. East wind 5 to 10 mph.
Friday
 
 A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. East wind 5 to 10 mph.
Friday Night
 
 A slight chance of showers. Partly cloudy, with a low around 63. East wind 5 to 10 mph.
Saturday
 
 A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. Southeast wind 5 to 10 mph.
Saturday Night
 
 Partly cloudy, with a low around 64. Southeast wind 5 to 10 mph.
Sunday
 
 A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Southeast wind 5 to 10 mph.

 

Forecast from NOAA-NWS for Port Allen LA.