For More Weather Information:

18NM WSW Islip NY

[NOTICE]

Last Update: 7:01 am EDT Sep 19, 2026
Forecast Valid: 2pm EDT Sep 19, 2026-6pm EDT Sep 25, 2026

This Afternoon

ESE wind around 10 kt. Partly sunny. Seas 1 ft or less.

Tonight

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

Sunday

SE wind 10 to 12 kt. Rain, with thunderstorms also possible after 5pm. Seas 1 ft or less.

Sunday Night

S wind 8 to 11 kt becoming N after midnight. Rain and possibly a thunderstorm. Seas 1 ft or less.

Monday

NNE wind 12 to 16 kt. A chance of rain, mainly before 8am. Seas 1 ft or less.

Monday Night

NE wind 12 to 16 kt. Mostly cloudy. Seas 1 ft or less.

Tuesday

ENE wind 17 to 19 kt. A chance of showers after 8am. Seas 1 ft or less.

Tuesday Night

ENE wind 17 to 20 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday

ENE wind 19 to 21 kt, with gusts as high as 32 kt. Mostly cloudy. Seas 1 ft or less.

Winds and seas may be higher in and near tstms.

*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.