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11NM N Grand Isle LA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 11:32 am CST Dec 5, 2025
Forecast Valid: 2pm CST Dec 5, 2025-6pm CST Dec 11, 2025

This Afternoon

N wind 5 to 10 kt. Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. Showers likely, mainly after 4am. Seas 1 ft or less.

Saturday

NNE wind 5 to 10 kt becoming E in the afternoon. Showers, mainly before 3pm. Seas 1 ft or less.

Saturday Night

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

Sunday

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

Sunday Night

NNW wind 5 to 10 kt increasing to 15 to 20 kt after midnight. A chance of showers before midnight. Seas 1 ft or less.

Monday

N wind 10 to 20 kt. Mostly sunny. Seas 1 ft or less.

Monday Night

NNE wind around 10 kt. Partly cloudy. Seas 1 ft or less.

Tuesday

NE wind 5 to 10 kt. 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.