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New York, NY Local Forecast Office

15NM WSW Islip NY

Marine Point Forecast

[NOTICE]

Tonight
W 9kt
< 1ft
Independence Day
NNW 8kt
< 1ft
Friday Night
WSW 7kt⇓
< 1ft
Saturday
⇑S 8kt
< 1ft
Saturday Night
SW 10kt
< 1ft
Sunday
S 13kt
< 1ft
Sunday Night
SSW 15kt⇓
< 1ft
Monday
S 11kt
< 1ft
Monday Night
S 12kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:32 pm EDT Jul 3, 2025
Forecast Valid: 7pm EDT Jul 3, 2025-6pm EDT Jul 10, 2025

View Nearby Observations

Detailed Forecast

...SEVERE THUNDERSTORM WATCH 484 IN EFFECT UNTIL 10 PM EDT THIS

Tonight

W wind 7 to 9 kt becoming NW in the evening. A chance of showers and thunderstorms, mainly before 8pm. Some of the storms could be severe. Seas 1 ft or less.

Independence Day

NNW wind around 8 kt becoming WSW in the afternoon. Sunny. Seas 1 ft or less.

Friday Night

WSW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Saturday Night

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

Sunday

S wind 8 to 13 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

SSW wind 12 to 15 kt decreasing to 9 to 12 kt after midnight. Partly cloudy. Seas 1 ft or less.

Monday

S wind 7 to 11 kt. Partly sunny. Seas 1 ft or less.

Monday Night

S wind 7 to 12 kt. A chance of showers. Seas 1 ft or less.

*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.