Port Allen, LA Weather Forecast
Local 7-day forecast
Mostly Sunny then Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Port Allen, LA in one place.
Showers and thunderstorms likely after noon. Mostly sunny. High near 97, with temperatures falling to around 92 in the afternoon. Heat index values as high as 109. West wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Port Allen, LA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 24, 2026 8:27 AM CDT.
The active forecast window currently covers Aug 24 to Aug 30, 2026 for Port Allen, LA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 30, 2026
- Latest sync
- Aug 24, 2026 8:27 AM CDT
- Forecast office
- LIX
- Source
- NOAA / NWS
Daily Outlook
This Week in Port Allen
Today looks like the warmest upcoming period in Port Allen at 97 degrees F.
Thursday Night is the coolest period ahead with temperatures near 75 degrees F.
The strongest winds are forecast for Today at about 0 to 5 mph W.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 24, 2026 8:27 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LIX
- Radar station
- KLIX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm. Mostly cloudy, with a low around 78. Southwest wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a half and three quarters of an inch possible.
A slight chance of rain showers between 9am and 10am, then showers and thunderstorms likely. Mostly sunny. High near 93, with temperatures falling to around 89 in the afternoon. Heat index values as high as 106. Northwest wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly clear, with a low around 77. Southwest wind 0 to 5 mph.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. West wind 0 to 5 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly clear, with a low around 77. South wind 0 to 5 mph. Chance of precipitation is 50%.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms. Mostly sunny, with a high near 93. Southwest wind 0 to 5 mph. Chance of precipitation is 80%.
Showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Southwest wind 0 to 5 mph.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly sunny, with a high near 91. North wind 0 to 5 mph.
Showers and thunderstorms likely before 1am. Partly cloudy, with a low around 75. East wind 0 to 5 mph.
A chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 93. East wind 0 to 5 mph.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. Southeast wind 0 to 5 mph.
A chance of showers and thunderstorms after 7am. Sunny, with a high near 92. Southeast wind 0 to 5 mph.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. Southeast wind 0 to 5 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Aug 24
|
Mostly Sunny then Showers And Thunderstorms Likely
|
97°F |
0 to 5 mph
W
|
|
Tonight
Aug 24
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
78°F |
0 to 5 mph
SW
|
|
Tuesday
Aug 25
|
Showers And Thunderstorms Likely
|
93°F |
0 to 5 mph
NW
|
|
Tuesday Night
Aug 25
|
Mostly Clear
|
77°F |
0 to 5 mph
SW
|
|
Wednesday
Aug 26
|
Sunny then Chance Showers And Thunderstorms
|
95°F |
0 to 5 mph
W
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms
|
77°F |
0 to 5 mph
S
|
|
Thursday
Aug 27
|
Chance Showers And Thunderstorms
|
93°F |
0 to 5 mph
SW
|
|
Thursday Night
Aug 27
|
Showers And Thunderstorms then Chance Showers And Thunderstorms
|
75°F |
0 to 5 mph
SW
|
|
Friday
Aug 28
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
91°F |
0 to 5 mph
N
|
|
Friday Night
Aug 28
|
Showers And Thunderstorms Likely
|
75°F |
0 to 5 mph
E
|
|
Saturday
Aug 29
|
Chance Showers And Thunderstorms
|
93°F |
0 to 5 mph
E
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms then Partly Cloudy
|
75°F |
0 to 5 mph
SE
|
|
Sunday
Aug 30
|
Chance Showers And Thunderstorms
|
92°F |
0 to 5 mph
SE
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms then Partly Cloudy
|
75°F |
0 to 5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Port Allen.
