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New Orleans/Baton Rouge, LA Local Forecast Office

11NM N Grand Isle LA

Marine Point Forecast

[NOTICE]

Overnight
Low: 65 °F
SSW 10kt
< 1ft
Friday
High: 70 °F
S 10kt
< 1ft
Friday Night
Low: 65 °F
S 10kt
< 1ft
Saturday
High: 71 °F
SSW 10kt
< 1ft
Saturday Night
Low: 51 °F
⇑N 25kt
< 1ft
Sunday
High: 59 °F
N 25kt
1ft
Sunday Night
Low: 44 °F
N 20kt
1ft
Monday
High: 55 °F
N 20kt
1ft
Monday Night
Low: 43 °F
N 15kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:07 pm CST Feb 19, 2026
Forecast Valid: 11pm CST Feb 19, 2026-6pm CST Feb 26, 2026

View Nearby Observations

Detailed Forecast

Overnight

SSW wind 5 to 10 kt. Widespread dense fog, mainly between 1am and 4am. Seas 1 ft or less.

Friday

S wind 5 to 10 kt. Widespread dense fog, mainly before 7am. Seas 1 ft or less.

Friday Night

S wind 5 to 10 kt. A slight chance of showers. Patchy fog before 7pm. Seas 1 ft or less.

Saturday

SSW wind 5 to 10 kt. A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Seas 1 ft or less.

Saturday Night

SW wind 10 to 15 kt becoming N 20 to 25 kt in the evening. Winds could gust as high as 30 kt. A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Seas 1 ft or less.

Sunday

N wind 20 to 25 kt, with gusts as high as 30 kt. Sunny. Seas around 1 ft.

Sunday Night

N wind around 20 kt, with gusts as high as 25 kt. Partly cloudy. Seas around 1 ft.

Monday

N wind 10 to 20 kt. Sunny. Seas around 1 ft.

Monday Night

N wind 10 to 15 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.