For More Weather Information:

18NM WSW Islip NY

[NOTICE]

Last Update: 2:41 pm EDT Sep 17, 2026
Forecast Valid: 9pm EDT Sep 17, 2026-6pm EDT Sep 24, 2026

Tonight

SSW wind 12 to 15 kt becoming WSW 8 to 11 kt after midnight. A chance of showers. Seas 1 ft or less.

Friday

N wind 7 to 10 kt. Mostly sunny. Seas 1 ft or less.

Friday Night

N wind 9 to 13 kt. Clear during the early evening, then becoming mostly cloudy. Seas 1 ft or less.

Saturday

NE wind 9 to 12 kt becoming E in the afternoon. Mostly sunny. Seas 1 ft or less.

Saturday Night

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

Sunday

SE wind 12 to 14 kt becoming S in the afternoon. Showers likely, mainly after noon. Seas 1 ft or less.

Sunday Night

S wind 9 to 11 kt becoming N after midnight. Showers, mainly before 2am. Seas 1 ft or less.

Monday

NE wind 12 to 14 kt, with gusts as high as 20 kt. A chance of showers. Seas 1 ft or less.

Monday Night

ENE wind 13 to 15 kt, with gusts as high as 21 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.