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Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:N wind around 8 kt becoming NNE after midnight. A chance of snow, mainly after 4am. Seas 1 ft or less.

      N 8kt
      < 1ft

    • Sunday

      Sunday:NE wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Snow before 1pm, then snow and sleet. The snow and sleet could be heavy at times. Seas 1 ft or less.

      ⇑NE 20kt
      < 1ft

    • Sunday Night

      Sunday Night:ENE wind 20 to 23 kt becoming NNE 14 to 17 kt after midnight. Winds could gust as high as 31 kt. Sleet before 1am, then sleet likely, possibly mixed with snow between 1am and 4am, then snow likely, possibly mixed with rain after 4am. The sleet could be heavy at times. Seas 1 ft or less.

      ENE 23kt⇓
      < 1ft

    • Monday

      Monday:N wind 10 to 13 kt becoming WNW 14 to 17 kt in the afternoon. Winds could gust as high as 23 kt. Snow likely, possibly mixed with rain before 7am, then a chance of snow. Seas 1 ft or less.

      ⇑WNW 17kt
      < 1ft

    • Monday Night

      Monday Night:WNW wind around 21 kt. Partly cloudy. Seas 1 ft or less.

      WNW 21kt
      < 1ft

    • Tuesday

      Tuesday:W wind 15 to 17 kt, with gusts as high as 23 kt. Mostly sunny. Seas 1 ft or less.

      W 17kt
      < 1ft

    • Tuesday Night

      Tuesday Night:WNW wind 15 to 17 kt, with gusts as high as 23 kt. Partly cloudy. Seas 1 ft or less.

      WNW 17kt
      < 1ft

    • Wednesday

      Wednesday:WNW wind around 13 kt. Mostly sunny. Seas 1 ft or less.

      WNW 13kt
      < 1ft

    • Wednesday Night

      Wednesday Night:WNW wind 10 to 12 kt. Mostly cloudy. Seas 1 ft or less.

      WNW 12kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 1:15 pm EST Jan 24, 2026
Forecast Valid: 5pm EST Jan 24, 2026-6pm EST Jan 31, 2026

View Nearby Observations

Detailed Forecast

...GALE WARNING IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE

Tonight
N wind around 8 kt becoming NNE after midnight. A chance of snow, mainly after 4am. Seas 1 ft or less.
Sunday
NE wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Snow before 1pm, then snow and sleet. The snow and sleet could be heavy at times. Seas 1 ft or less.
Sunday Night
ENE wind 20 to 23 kt becoming NNE 14 to 17 kt after midnight. Winds could gust as high as 31 kt. Sleet before 1am, then sleet likely, possibly mixed with snow between 1am and 4am, then snow likely, possibly mixed with rain after 4am. The sleet could be heavy at times. Seas 1 ft or less.
Monday
N wind 10 to 13 kt becoming WNW 14 to 17 kt in the afternoon. Winds could gust as high as 23 kt. Snow likely, possibly mixed with rain before 7am, then a chance of snow. Seas 1 ft or less.
Monday Night
WNW wind around 21 kt. Partly cloudy. Seas 1 ft or less.
Tuesday
W wind 15 to 17 kt, with gusts as high as 23 kt. Mostly sunny. Seas 1 ft or less.
Tuesday Night
WNW wind 15 to 17 kt, with gusts as high as 23 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
WNW wind around 13 kt. Mostly sunny. Seas 1 ft or less.
Wednesday Night
WNW wind 10 to 12 kt. Mostly 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: 1:15 pm EST Jan 24, 2026
Forecast Valid: 5pm EST Jan 24, 2026-6pm EST Jan 31, 2026
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