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New Orleans/Baton Rouge, LA Local Forecast Office

29NM NE Grand Isle LA

Marine Point Forecast

[NOTICE]

This Afternoon
High: 30 °C
S 15km/h
< 1m
Tonight
Low: 27 °C
W 15km/h
< 1m
Sunday
High: 30 °C
SSE 15km/h
< 1m
Sunday Night
Low: 27 °C
S 15km/h
< 1m
Monday
High: 29 °C
SSW 15km/h
< 1m
Monday Night
Low: 27 °C
S 15km/h
< 1m
Tuesday
High: 29 °C
S 15km/h
< 1m
Tuesday Night
Low: 28 °C
S 20km/h
1m
Wednesday
High: 29 °C
S 20km/h
< 1m

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:56 am CDT Jun 14, 2025
Forecast Valid: 12pm CDT Jun 14, 2025-6pm CDT Jun 20, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

S wind 10 to 15 km/h. A chance of showers and thunderstorms, mainly after 2pm. Seas 1 m or less.

Tonight

W wind 10 to 15 km/h becoming S after midnight. A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 5am. Seas 1 m or less.

Sunday

SSE wind 10 to 15 km/h. A chance of showers and thunderstorms, mainly after 7am. Seas 1 m or less.

Sunday Night

S wind 10 to 15 km/h. A slight chance of showers and thunderstorms. Seas 1 m or less.

Monday

SSW wind 10 to 15 km/h. Showers likely and possibly a thunderstorm before 10am, then showers and thunderstorms likely between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. Seas 1 m or less.

Monday Night

S wind around 15 km/h. Showers and thunderstorms likely, mainly before 7pm. Seas 1 m or less.

Tuesday

S wind around 15 km/h. Showers and possibly a thunderstorm. Seas 1 m or less.

Tuesday Night

S wind 15 to 20 km/h. A chance of showers and thunderstorms, mainly after 1am. Seas around 1 m.

Wednesday

S wind 15 to 20 km/h. Showers and thunderstorms likely. Seas 1 m or less.

Winds and waves 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.