National Weather Service Forecast for: Port Allen LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 5:14 am CST Dec 5, 2025
 
Today

Today: A 40 percent chance of showers after 11am. Cloudy, with a high near 49. North wind around 5 mph becoming calm in the afternoon.
Chance
Showers

 Tonight

Tonight: A chance of showers before 9pm, then a chance of showers after midnight. Cloudy, with a low around 47. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers

 Saturday

Saturday: A 50 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 58. Calm wind becoming east around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers then
Slight Chance
Showers
 Saturday
Night
Saturday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 52. Southeast wind around 5 mph becoming calm.
Mostly Cloudy
then Slight
Chance
Showers
 Sunday

Sunday: A 20 percent chance of showers after noon. Mostly cloudy, with a high near 69. Calm wind becoming northwest around 5 mph in the afternoon.
Mostly Cloudy
then Slight
Chance
Showers
 Sunday
Night
Sunday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 43. North wind 5 to 10 mph.
Slight Chance
Showers then
Partly Cloudy
 Monday

Monday: Sunny, with a high near 55. North wind 5 to 10 mph.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 36. North wind around 5 mph becoming calm in the evening.
Mostly Clear

 Tuesday

Tuesday: Sunny, with a high near 58. Calm wind.
Sunny
Hi 49 °F Lo 47 °F Hi 58 °F Lo 52 °F Hi 69 °F Lo 43 °F Hi 55 °F Lo 36 °F Hi 58 °F

 

Today
 
 A 40 percent chance of showers after 11am. Cloudy, with a high near 49. North wind around 5 mph becoming calm in the afternoon.
Tonight
 
 A chance of showers before 9pm, then a chance of showers after midnight. Cloudy, with a low around 47. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
 
 A 50 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 58. Calm wind becoming east around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
 
 A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 52. Southeast wind around 5 mph becoming calm.
Sunday
 
 A 20 percent chance of showers after noon. Mostly cloudy, with a high near 69. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
 
 A 20 percent chance of showers before midnight. Partly cloudy, with a low around 43. North wind 5 to 10 mph.
Monday
 
 Sunny, with a high near 55. North wind 5 to 10 mph.
Monday Night
 
 Mostly clear, with a low around 36. North wind around 5 mph becoming calm in the evening.
Tuesday
 
 Sunny, with a high near 58. Calm wind.
Tuesday Night
 
 Mostly clear, with a low around 40. Calm wind.
Wednesday
 
 Sunny, with a high near 68. Calm wind becoming southwest around 5 mph in the morning.
Wednesday Night
 
 Mostly clear, with a low around 49. Southwest wind around 5 mph becoming north after midnight.
Thursday
 
 Sunny, with a high near 65. North wind around 5 mph becoming south in the afternoon.

 

Forecast from NOAA-NWS for Port Allen LA.