Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

For More Weather Information:

New Orleans/Baton Rouge, LA Local Forecast Office

11NM N Grand Isle LA

Marine Point Forecast

[NOTICE]

Overnight
Low: 72 °F
SE 10kt
< 1ft
Wednesday
High: 75 °F
SE 10kt
< 1ft
Wednesday Night
Low: 70 °F
SE 10kt
< 1ft
Thursday
High: 75 °F
SE 10kt
< 1ft
Thursday Night
Low: 71 °F
SE 10kt
< 1ft
Friday
High: 76 °F
SSE 10kt
< 1ft
Friday Night
Low: 72 °F
S 10kt
< 1ft
Saturday
High: 78 °F
SSW 10kt
< 1ft
Saturday Night
Low: 72 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:01 pm CDT Apr 21, 2026
Forecast Valid: 11pm CDT Apr 21, 2026-6pm CDT Apr 28, 2026

View Nearby Observations

Detailed Forecast

Overnight

SE wind around 10 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday

SE wind around 10 kt. A slight chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 4pm. Seas 1 ft or less.

Wednesday Night

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

Thursday

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

Thursday Night

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

Friday

SSE wind around 10 kt. A slight chance of showers, then a chance of showers and thunderstorms after 10am. Seas 1 ft or less.

Friday Night

S wind 5 to 10 kt. Partly cloudy. Seas 1 ft or less.

Saturday

SSW wind 5 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. Partly cloudy. 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.