Grand Bayou, LA Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Bayou, LA in one place.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny. High near 93, with temperatures falling to around 89 in the afternoon. Heat index values as high as 108. Northeast wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Grand Bayou, 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: Sep 15, 2026 7:49 PM CDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Grand Bayou, LA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 7:49 PM CDT
- Forecast office
- LIX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Bayou
Saturday looks like the warmest upcoming period in Grand Bayou at 95 degrees F.
Thursday Night is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 10 mph NE.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 7:49 PM CDT
- Coverage
- 6 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 slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 76. East wind 0 to 10 mph. Chance of precipitation is 20%.
Sunny, with a high near 92. East wind 5 to 10 mph.
Clear, with a low around 71. East wind 0 to 5 mph.
Sunny, with a high near 93. Northeast wind 0 to 5 mph.
Clear, with a low around 71. East wind 0 to 5 mph.
Sunny, with a high near 95. Northeast wind 0 to 5 mph.
Mostly clear, with a low around 74. South wind around 0 mph.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Sunny, with a high near 95. Northeast wind 0 to 5 mph.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 75. Southeast wind around 0 mph.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Northeast wind 0 to 5 mph.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. Northeast wind around 0 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
5 to 10 mph
NE
|
|
Wednesday Night
Sep 16
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
76°F |
0 to 10 mph
E
|
|
Thursday
Sep 17
|
Sunny
|
92°F |
5 to 10 mph
E
|
|
Thursday Night
Sep 17
|
Clear
|
71°F |
0 to 5 mph
E
|
|
Friday
Sep 18
|
Sunny
|
93°F |
0 to 5 mph
NE
|
|
Friday Night
Sep 18
|
Clear
|
71°F |
0 to 5 mph
E
|
|
Saturday
Sep 19
|
Sunny
|
95°F |
0 to 5 mph
NE
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
74°F |
0 mph
|
|
Sunday
Sep 20
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
95°F |
0 to 5 mph
NE
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms then Mostly Clear
|
75°F |
0 mph
|
|
Monday
Sep 21
|
Sunny then Chance Showers And Thunderstorms
|
94°F |
0 to 5 mph
NE
|
|
Monday Night
Sep 21
|
Chance Showers And Thunderstorms then Partly Cloudy
|
75°F |
0 mph
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Bayou.