For More Weather Information:

18NM WSW Islip NY

[NOTICE]

Last Update: 3:41 am EDT Sep 20, 2026
Forecast Valid: 8am EDT Sep 20, 2026-6pm EDT Sep 26, 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH

Today

SSE wind 11 to 13 kt. Rain. Seas 1 ft or less.

Tonight

S wind 7 to 12 kt becoming N after midnight. Periods of rain and possibly a thunderstorm before 2am, then a chance of rain. Seas 1 ft or less.

Monday

NE wind 12 to 15 kt. A chance of rain before 8am. Seas 1 ft or less.

Monday Night

ENE wind 12 to 15 kt. A chance of showers, mainly after 2am. Seas 1 ft or less.

Tuesday

ENE wind 17 to 19 kt. A chance of showers. Seas 1 ft or less.

Tuesday Night

ENE wind around 21 kt. Cloudy. Seas 1 ft or less.

Wednesday

ENE wind 21 to 23 kt, with gusts as high as 30 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday Night

NE wind 18 to 20 kt, with gusts as high as 29 kt. Mostly cloudy. Seas 1 ft or less.

Thursday

NE wind 17 to 20 kt, with gusts as high as 29 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.