National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:ENE wind 22 to 26 kt. Snow. Seas 4 to 5 ft.

      ENE 26kt
      4-5ft

    • Tonight

      Tonight:ENE wind 30 to 35 kt becoming NNE 36 to 41 kt after midnight. Winds could gust as high as 50 kt. Snow. The snow could be heavy at times. Seas 6 ft building to 10 ft.

      ⇑NNE 41kt
      Waves Building10ft

      Storm Warning
      Storm Warning

    • Monday

      Monday:N wind 34 to 39 kt becoming NNW 27 to 32 kt in the afternoon. Winds could gust as high as 50 kt. Snow, mainly before 4pm. The snow could be heavy at times. Seas 12 ft subsiding to 10 ft.

      N 39kt⇓
      12ftWaves Subsiding

      Storm Warning
      Storm Warning

    • Monday Night

      Monday Night:NW wind 21 to 23 kt, with gusts as high as 29 kt. A slight chance of snow before 7pm. Seas 9 ft subsiding to 6 ft.

      NW 23kt
      9ftWaves Subsiding

    • Tuesday

      Tuesday:WNW wind 19 to 22 kt decreasing to 16 to 19 kt in the afternoon. Winds could gust as high as 28 kt. Sunny. Seas 6 ft subsiding to 4 ft.

      WNW 22kt⇓
      6ftWaves Subsiding

    • Tuesday Night

      Tuesday Night:W wind 10 to 15 kt becoming S after midnight. A chance of snow after 1am. Seas 2 to 3 ft.

      S 15kt
      2-3ft

    • Wednesday

      Wednesday:SSW wind 17 to 20 kt, with gusts as high as 26 kt. A chance of rain and snow before noon. Seas 3 ft building to 5 ft.

      SSW 20kt
      Waves Building5ft

    • Wednesday Night

      Wednesday Night:WSW wind 12 to 15 kt becoming W after midnight. Partly cloudy. Seas 4 to 5 ft.

      WSW 15kt
      4-5ft

    • Thursday

      Thursday:W wind 9 to 14 kt becoming SE in the afternoon. A chance of rain and snow between noon and 1pm, then a chance of rain after 1pm. Seas around 4 ft.

      SE 14kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 12:57 pm EST Feb 22, 2026
Forecast Valid: 2pm EST Feb 22, 2026-6pm EST Feb 28, 2026

View Nearby Observations

Detailed Forecast

...STORM WARNING IN EFFECT FROM 7 PM EST THIS EVENING THROUGH

This Afternoon
ENE wind 22 to 26 kt. Snow. Seas 4 to 5 ft.
Tonight
ENE wind 30 to 35 kt becoming NNE 36 to 41 kt after midnight. Winds could gust as high as 50 kt. Snow. The snow could be heavy at times. Seas 6 ft building to 10 ft.
Monday
N wind 34 to 39 kt becoming NNW 27 to 32 kt in the afternoon. Winds could gust as high as 50 kt. Snow, mainly before 4pm. The snow could be heavy at times. Seas 12 ft subsiding to 10 ft.
Monday Night
NW wind 21 to 23 kt, with gusts as high as 29 kt. A slight chance of snow before 7pm. Seas 9 ft subsiding to 6 ft.
Tuesday
WNW wind 19 to 22 kt decreasing to 16 to 19 kt in the afternoon. Winds could gust as high as 28 kt. Sunny. Seas 6 ft subsiding to 4 ft.
Tuesday Night
W wind 10 to 15 kt becoming S after midnight. A chance of snow after 1am. Seas 2 to 3 ft.
Wednesday
SSW wind 17 to 20 kt, with gusts as high as 26 kt. A chance of rain and snow before noon. Seas 3 ft building to 5 ft.
Wednesday Night
WSW wind 12 to 15 kt becoming W after midnight. Partly cloudy. Seas 4 to 5 ft.
Thursday
W wind 9 to 14 kt becoming SE in the afternoon. A chance of rain and snow between noon and 1pm, then a chance of rain after 1pm. Seas around 4 ft.

*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: 40.53°N 73.44°W
Last Update: 12:57 pm EST Feb 22, 2026
Forecast Valid: 2pm EST Feb 22, 2026-6pm EST Feb 28, 2026
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