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3NM SW Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:41 pm CST Jan 9, 2026
Forecast Valid: 1pm CST Jan 9, 2026-6pm CST Jan 15, 2026

This Afternoon

S wind around 10 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Tonight

S wind around 10 kt. Showers and thunderstorms likely, mainly before 2am. Seas around 1 ft.

Saturday

SSW wind around 10 kt becoming N in the afternoon. Showers and thunderstorms likely, mainly before 3pm. Seas around 1 ft.

Saturday Night

N wind 15 to 25 kt. Mostly cloudy. Seas around 1 ft.

Sunday

N wind 15 to 25 kt. Partly sunny. Seas around 1 ft.

Sunday Night

NE wind 15 to 20 kt. Mostly cloudy. Seas around 1 ft.

Monday

NE wind 10 to 15 kt. Partly sunny. Seas around 1 ft.

Monday Night

NNE wind 5 to 10 kt. Mostly cloudy. Seas 1 ft or less.

Tuesday

Variable winds 5 kt or less. Partly sunny. 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.