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New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

Today
High: 88 °F
Light Wind
< 1ft
Tonight
Low: 78 °F
Light Wind
< 1ft
Saturday
High: 88 °F
Light Wind
< 1ft
Saturday Night
Low: 79 °F
Light Wind
< 1ft
Sunday
High: 89 °F
Light Wind
< 1ft
Sunday Night
Low: 80 °F
Light Wind
< 1ft
Labor Day
High: 90 °F
Light Wind
< 1ft
Monday Night
Low: 79 °F
Light Wind
< 1ft
Tuesday
High: 90 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:31 am CDT Sep 4, 2026
Forecast Valid: 5am CDT Sep 4, 2026-6pm CDT Sep 10, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds 5 kt or less. Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 4am, then a chance of showers and thunderstorms after 4am. Seas 1 ft or less.

Saturday

Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 1pm. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1am. Seas 1 ft or less.

Labor Day

Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly after 1am. Seas 1 ft or less.

Tuesday

Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.

Winds and seas higher in and near thunderstorms.

*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.