Remnants of Arthur and Heavy Rainfall Across the South; Fire Weather Threat in the West

Life-threatening, potentially catastrophic flash flooding expected along the central Gulf Coast as the remnants of Arthur track across the area. Isolated brief tornadoes and damaging gusts remain possible overnight in the Southeast. Isolated to scattered dry thunderstorms may cause lightning-ignited fires and erratic behavior due to gusty winds across parts of the West Friday. Read More >

For More Weather Information:

New Orleans/Baton Rouge, LA Local Forecast Office

17NM E Grand Isle LA

Marine Point Forecast

[NOTICE]

Juneteenth
High: 91 °F
SSW 10kt
1ft
Tonight
Low: 81 °F
S 10kt
1ft
Saturday
High: 91 °F
SSW 10kt
< 1ft
Saturday Night
Low: 81 °F
S 10kt
1ft
Sunday
High: 91 °F
SSW 10kt
< 1ft
Sunday Night
Low: 82 °F
S 10kt
1ft
Monday
High: 91 °F
SSW 10kt
1ft
Monday Night
Low: 82 °F
SSW 10kt
1ft
Tuesday
High: 91 °F
SW 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:41 am CDT Jun 19, 2026
Forecast Valid: 7am CDT Jun 19, 2026-6pm CDT Jun 25, 2026

View Nearby Observations

Detailed Forecast

Juneteenth

SSW wind around 10 kt. Mostly sunny. Seas around 1 ft.

Tonight

S wind around 10 kt. A slight chance of showers and thunderstorms between 11pm and 2am. Seas around 1 ft.

Saturday

SSW wind 5 to 10 kt. Mostly sunny. Seas 1 ft or less.

Saturday Night

S wind 5 to 10 kt. A slight chance of showers and thunderstorms. Seas around 1 ft.

Sunday

SSW wind around 10 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

S wind around 10 kt. Partly cloudy. Seas around 1 ft.

Monday

SSW wind around 10 kt. Sunny. Seas around 1 ft.

Monday Night

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

Tuesday

SW wind 5 to 10 kt. Sunny. Seas around 1 ft.

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.