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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:Variable winds 5 kt or less. A chance of rain after 4am.  Patchy fog.  Seas 1 ft or less.

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming ENE 5 to 10 kt in the morning. Rain, mainly after 7am.  Patchy fog before 1pm.  Seas 1 ft or less.

      ⇑ENE 10kt
      < 1ft

    • Thursday Night

      Thursday Night:ENE wind 12 to 15 kt. Rain.   Seas 1 ft or less.

      ENE 15kt
      < 1ft

    • Friday

      Friday:NE wind 8 to 12 kt. A chance of rain before 1pm.   Seas 1 ft or less.

      NE 12kt
      < 1ft

    • Friday Night

      Friday Night:ENE wind 5 to 7 kt becoming E after midnight. A chance of showers after 1am.   Seas 1 ft or less.

      ENE 7kt
      < 1ft

    • Saturday

      Saturday:SE wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. Cloudy. Seas 1 ft or less.

      ⇑S 11kt
      < 1ft

    • Saturday Night

      Saturday Night:SSW wind 10 to 14 kt becoming W after midnight. Showers likely, mainly before 1am.   Seas 1 ft or less.

      SSW 14kt
      < 1ft

    • Sunday

      Sunday:WNW wind around 8 kt becoming SW in the afternoon. Partly sunny. Seas 1 ft or less.

      WNW 8kt
      < 1ft

    • Sunday Night

      Sunday Night:SSW wind around 9 kt becoming WSW after midnight. Partly cloudy. Seas 1 ft or less.

      SSW 9kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 9:52 pm EST Mar 4, 2026
Forecast Valid: 12am EST Mar 5, 2026-6pm EDT Mar 11, 2026

View Nearby Observations

Detailed Forecast


Overnight
Variable winds 5 kt or less. A chance of rain after 4am. Patchy fog. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming ENE 5 to 10 kt in the morning. Rain, mainly after 7am. Patchy fog before 1pm. Seas 1 ft or less.
Thursday Night
ENE wind 12 to 15 kt. Rain. Seas 1 ft or less.
Friday
NE wind 8 to 12 kt. A chance of rain before 1pm. Seas 1 ft or less.
Friday Night
ENE wind 5 to 7 kt becoming E after midnight. A chance of showers after 1am. Seas 1 ft or less.
Saturday
SE wind 5 to 8 kt becoming S 8 to 11 kt in the afternoon. Cloudy. Seas 1 ft or less.
Saturday Night
SSW wind 10 to 14 kt becoming W after midnight. Showers likely, mainly before 1am. Seas 1 ft or less.
Sunday
WNW wind around 8 kt becoming SW in the afternoon. Partly sunny. Seas 1 ft or less.
Sunday Night
SSW wind around 9 kt becoming WSW after midnight. Partly cloudy. Seas 1 ft or less.

*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 40.62°N 73.59°W
Last Update: 9:52 pm EST Mar 4, 2026
Forecast Valid: 12am EST Mar 5, 2026-6pm EDT Mar 11, 2026
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