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

19NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:Variable winds less than 5 kt becoming E 5 to 10 kt in the evening. A chance of rain and snow after 4am. Seas around 2 ft.

      ⇑E 10kt
      2ft

    • Sunday

      Sunday:E wind 15 to 20 kt, with gusts as high as 28 kt. A chance of rain and snow before 1pm, then snow. Seas 2 ft building to 4 ft.

      E 20kt
      Waves Building4ft

    • Sunday Night

      Sunday Night:NE wind 22 to 27 kt becoming N 29 to 34 kt after midnight. Winds could gust as high as 45 kt. Snow with areas of blowing snow. The snow could be heavy at times. Seas 4 ft building to 6 ft.

      ⇑N 34kt
      Waves Building6ft

      Storm Warning
      Storm Warning

    • Monday

      Monday:N wind 27 to 32 kt decreasing to 22 to 27 kt in the afternoon. Winds could gust as high as 43 kt. Snow with areas of blowing snow before 1pm, then snow likely with areas of blowing snow after 1pm. The snow could be heavy at times. Seas 6 ft building to 8 ft.

      N 32kt⇓
      Waves Building8ft

      Storm Warning
      Storm Warning

    • Monday Night

      Monday Night:NW wind around 19 kt, with gusts as high as 27 kt. Areas of blowing snow and a chance of snow before 10pm, then areas of blowing snow after 10pm. Seas 7 ft subsiding to 4 ft.

      NW 19kt
      7ftWaves Subsiding

    • Tuesday

      Tuesday:WNW wind 16 to 18 kt, with gusts as high as 24 kt. Mostly sunny. Seas around 3 ft.

      WNW 18kt
      3ft

    • Tuesday Night

      Tuesday Night:WNW wind 8 to 13 kt becoming SSW after midnight. Increasing clouds. Seas 2 to 3 ft.

      WNW 13kt
      2-3ft

    • Wednesday

      Wednesday:S wind 11 to 13 kt. A chance of snow. Seas 2 ft building to 4 ft.

      S 13kt
      Waves Building4ft

    • Wednesday Night

      Wednesday Night:SW wind around 14 kt, with gusts as high as 20 kt. A chance of rain. Seas around 4 ft.

      SW 14kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 3:48 pm EST Feb 21, 2026
Forecast Valid: 8pm EST Feb 21, 2026-6pm EST Feb 28, 2026

View Nearby Observations

Detailed Forecast

...STORM WARNING IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY

Tonight
Variable winds less than 5 kt becoming E 5 to 10 kt in the evening. A chance of rain and snow after 4am. Seas around 2 ft.
Sunday
E wind 15 to 20 kt, with gusts as high as 28 kt. A chance of rain and snow before 1pm, then snow. Seas 2 ft building to 4 ft.
Sunday Night
NE wind 22 to 27 kt becoming N 29 to 34 kt after midnight. Winds could gust as high as 45 kt. Snow with areas of blowing snow. The snow could be heavy at times. Seas 4 ft building to 6 ft.
Monday
N wind 27 to 32 kt decreasing to 22 to 27 kt in the afternoon. Winds could gust as high as 43 kt. Snow with areas of blowing snow before 1pm, then snow likely with areas of blowing snow after 1pm. The snow could be heavy at times. Seas 6 ft building to 8 ft.
Monday Night
NW wind around 19 kt, with gusts as high as 27 kt. Areas of blowing snow and a chance of snow before 10pm, then areas of blowing snow after 10pm. Seas 7 ft subsiding to 4 ft.
Tuesday
WNW wind 16 to 18 kt, with gusts as high as 24 kt. Mostly sunny. Seas around 3 ft.
Tuesday Night
WNW wind 8 to 13 kt becoming SSW after midnight. Increasing clouds. Seas 2 to 3 ft.
Wednesday
S wind 11 to 13 kt. A chance of snow. Seas 2 ft building to 4 ft.
Wednesday Night
SW wind around 14 kt, with gusts as high as 20 kt. A chance of rain. 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 40.57°N 73.57°W
Last Update: 3:48 pm EST Feb 21, 2026
Forecast Valid: 8pm EST Feb 21, 2026-6pm EST Feb 28, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data