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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Saturday

      Saturday:Variable winds less than 5 kt becoming S 5 to 8 kt in the morning. Areas of fog.  Seas 1 ft or less.

      ⇑S 8kt
      < 1ft

    • Saturday Night

      Saturday Night:S wind 9 to 12 kt. A chance of showers after 10pm.  Areas of fog before 1am.  Seas 1 ft or less.

      S 12kt
      < 1ft

    • Sunday

      Sunday:SW wind 9 to 11 kt becoming W in the afternoon. A chance of rain, mainly before 1pm.   Seas 1 ft or less.

      SW 11kt
      < 1ft

    • Sunday Night

      Sunday Night:W wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.

      W 8kt
      < 1ft

    • Monday

      Monday:WSW wind 5 to 8 kt becoming SSW 8 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.

      ⇑SSW 11kt
      < 1ft

    • Monday Night

      Monday Night:SW wind 5 to 10 kt. Partly cloudy. Seas 1 ft or less.

      SW 10kt
      < 1ft

    • Tuesday

      Tuesday:SW wind 5 to 8 kt becoming S in the afternoon. Partly sunny. Seas 1 ft or less.

      S 8kt
      < 1ft

    • Tuesday Night

      Tuesday Night:S wind around 8 kt. Mostly cloudy. Seas 1 ft or less.

      S 8kt
      < 1ft

    • Wednesday

      Wednesday:S wind 8 to 11 kt increasing to 12 to 15 kt in the afternoon. A chance of rain.   Seas 1 ft or less.

      ⇑S 15kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:47 am EST Mar 7, 2026
Forecast Valid: 4am EST Mar 7, 2026-6pm EDT Mar 13, 2026

View Nearby Observations

Detailed Forecast

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EST THIS MORNING...

Saturday
Variable winds less than 5 kt becoming S 5 to 8 kt in the morning. Areas of fog. Seas 1 ft or less.
Saturday Night
S wind 9 to 12 kt. A chance of showers after 10pm. Areas of fog before 1am. Seas 1 ft or less.
Sunday
SW wind 9 to 11 kt becoming W in the afternoon. A chance of rain, mainly before 1pm. Seas 1 ft or less.
Sunday Night
W wind 6 to 8 kt. Mostly clear. Seas 1 ft or less.
Monday
WSW wind 5 to 8 kt becoming SSW 8 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
SW wind 5 to 10 kt. Partly cloudy. Seas 1 ft or less.
Tuesday
SW wind 5 to 8 kt becoming S in the afternoon. Partly sunny. Seas 1 ft or less.
Tuesday Night
S wind around 8 kt. Mostly cloudy. Seas 1 ft or less.
Wednesday
S wind 8 to 11 kt increasing to 12 to 15 kt in the afternoon. A chance of rain. 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: 2:47 am EST Mar 7, 2026
Forecast Valid: 4am EST Mar 7, 2026-6pm EDT Mar 13, 2026
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