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New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

This Afternoon
High: 70 °F
SE 10kt
< 1ft
Tonight
Low: 62 °F
SSW 15kt
1ft
Sunday
High: 71 °F
SW 15kt
1ft
Sunday Night
Low: 55 °F
W 10kt
1ft
Washington's Birthday
High: 64 °F
N 10kt
< 1ft
Monday Night
Low: 57 °F
Light Wind
< 1ft
Tuesday
High: 69 °F
Light Wind
< 1ft
Tuesday Night
Low: 62 °F
Light Wind
< 1ft
Wednesday
High: 71 °F
SSW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:33 am CST Feb 14, 2026
Forecast Valid: 1pm CST Feb 14, 2026-6pm CST Feb 20, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SE wind around 10 kt. Partly sunny. Seas 1 ft or less.

Tonight

SE wind 10 to 15 kt becoming SSW after midnight. A chance of showers and thunderstorms between 2am and 3am, then showers likely and possibly a thunderstorm after 3am. Seas around 1 ft.

Sunday

SW wind around 15 kt becoming W in the afternoon. A chance of showers and thunderstorms, mainly before 8am. Some of the storms could produce heavy rainfall. Seas around 1 ft.

Sunday Night

W wind around 10 kt becoming N after midnight. Partly cloudy. Seas around 1 ft.

Washington's Birthday

N wind 5 to 10 kt becoming ENE in the afternoon. Mostly sunny. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Tuesday

Variable winds 5 kt or less. Partly sunny. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.

Wednesday

SSW wind 5 to 10 kt. Mostly sunny. Seas 1 ft or less.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.