National Weather Service Forecast for: Port Allen LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 12:01 am CDT Jun 30, 2026
 
Overnight

Overnight: Clear, with a low around 76. South wind around 5 mph becoming calm.
Clear

 Tuesday

Tuesday: Sunny and hot, with a high near 97. Heat index values as high as 107. Calm wind.
Hot

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 78. Calm wind.
Partly Cloudy

 Wednesday

Wednesday: Showers and thunderstorms likely before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms after 5pm. High near 95. Heat index values as high as 107. North wind around 5 mph becoming calm. Chance of precipitation is 80%.
Slight Chance
T-storms then
T-storms
 Wednesday
Night
Wednesday Night: Showers and thunderstorms before 7pm. Low around 76. Calm wind. Chance of precipitation is 80%.
T-storms then
Mostly Clear
 Thursday

Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Calm wind becoming east around 5 mph.
Sunny then
Chance
T-storms
 Thursday
Night
Thursday Night: Mostly clear, with a low around 76. South wind around 5 mph becoming calm.
Mostly Clear

 Friday

Friday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 95. Calm wind becoming south around 5 mph.
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 76 °F Hi 97 °F Lo 78 °F Hi 95 °F Lo 76 °F Hi 95 °F Lo 76 °F Hi 95 °F Lo 76 °F

 

Overnight
 
 Clear, with a low around 76. South wind around 5 mph becoming calm.
Tuesday
 
 Sunny and hot, with a high near 97. Heat index values as high as 107. Calm wind.
Tuesday Night
 
 Partly cloudy, with a low around 78. Calm wind.
Wednesday
 
 Showers and thunderstorms likely before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms after 5pm. High near 95. Heat index values as high as 107. North wind around 5 mph becoming calm. Chance of precipitation is 80%.
Wednesday Night
 
 Showers and thunderstorms before 7pm. Low around 76. Calm wind. Chance of precipitation is 80%.
Thursday
 
 A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Calm wind becoming east around 5 mph.
Thursday Night
 
 Mostly clear, with a low around 76. South wind around 5 mph becoming calm.
Friday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 95. Calm wind becoming south around 5 mph.
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.
Saturday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 77. Southwest wind around 5 mph becoming calm.
Sunday
 
 Showers and thunderstorms likely. Sunny, with a high near 94. Calm wind becoming southwest around 5 mph.
Sunday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 77. Southwest wind around 5 mph becoming calm.
Monday
 
 Showers and thunderstorms likely. Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.

 

Forecast from NOAA-NWS for Port Allen LA.