For More Weather Information:

New Orleans/Baton Rouge, LA Local Forecast Office

11NM N Grand Isle LA

Marine Point Forecast

[NOTICE]

Tonight
Low: 84 °F
Tropical Storm Conditions
Thursday
High: 87 °F
Tropical Storm Conditions Possible
Thursday Night
Low: 85 °F
S 15kt
< 1ft
Friday
High: 87 °F
S 10kt
< 1ft
Friday Night
Low: 81 °F
Light Wind
< 1ft
Saturday
High: 88 °F
S 10kt
< 1ft
Saturday Night
Low: 81 °F
SSW 10kt
< 1ft
Sunday
High: 89 °F
SW 10kt
< 1ft
Sunday Night
Low: 82 °F
WSW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:18 pm CDT Jul 22, 2026
Forecast Valid: 7pm CDT Jul 22, 2026-6pm CDT Jul 29, 2026

View Nearby Observations

Detailed Forecast

...TROPICAL STORM WARNING IN EFFECT...

Tonight

Tropical storm conditions. Showers and possibly a thunderstorm, mainly before midnight, then a chance of showers and thunderstorms after midnight. Seas around 1 ft.

Thursday

Tropical storm conditions possible. A chance of showers and thunderstorms, mainly before 1pm. Seas around 1 ft.

Thursday Night

S wind 10 to 15 kt. A slight chance of showers, mainly between 1am and 2am. Seas 1 ft or less.

Friday

S wind 5 to 10 kt. Sunny. Seas 1 ft or less.

Friday Night

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

Saturday

W wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas 1 ft or less.

Saturday Night

SSW wind 5 to 10 kt. Partly cloudy. Seas 1 ft or less.

Sunday

W wind 5 to 10 kt becoming SW in the afternoon. Sunny. Seas 1 ft or less.

Sunday Night

WSW wind around 10 kt. Mostly clear. 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.