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New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

Tonight
Low: 69 °F
Light Wind
1ft
Sunday
High: 77 °F
Light Wind
< 1ft
Sunday Night
Low: 66 °F
Light Wind
< 1ft
Monday
High: 78 °F
Light Wind
< 1ft
Monday Night
Low: 66 °F
Light Wind
< 1ft
Tuesday
High: 78 °F
SSE 10kt
< 1ft
Tuesday Night
Low: 67 °F
SSE 10kt
1ft
Wednesday
High: 78 °F
S 15kt
1ft
Wednesday Night
Low: 56 °F
⇑N 25kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:02 pm CST Mar 7, 2026
Forecast Valid: 10pm CST Mar 7, 2026-6pm CDT Mar 14, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly after 4am. Patchy dense fog after 2am. Seas around 1 ft.

Sunday

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 4pm. Patchy fog before 9am. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Patchy dense fog after 3am. Seas 1 ft or less.

Monday

Variable winds 5 kt or less. Areas of dense fog before 8am. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. Patchy fog after 9pm. Seas 1 ft or less.

Tuesday

SSE wind 5 to 10 kt. Partly sunny. Seas 1 ft or less.

Tuesday Night

SSE wind around 10 kt. Mostly cloudy. Seas around 1 ft.

Wednesday

S wind 10 to 15 kt. A chance of showers and thunderstorms after noon. Seas around 1 ft.

Wednesday Night

SSW wind 15 to 20 kt becoming N 20 to 25 kt after midnight. Winds could gust as high as 30 kt. Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Seas around 1 ft.

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.