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New York, NY Local Forecast Office

18NM WSW Islip NY

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:N wind 7 to 11 kt. Mostly clear. Seas 1 ft or less.

      N 11kt
      < 1ft

    • Monday

      Monday:N wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Increasing clouds. Seas 1 ft or less.

      N 8kt⇓
      < 1ft

    • Monday Night

      Monday Night:SSE wind around 6 kt. Increasing clouds. Seas 1 ft or less.

      SSE 6kt
      < 1ft

    • Tuesday

      Tuesday:SSE wind around 7 kt becoming E in the afternoon. Rain likely, possibly mixed with snow before 1pm, then rain.   Seas 1 ft or less.

      ESE 7kt
      < 1ft

    • Tuesday Night

      Tuesday Night:S wind around 8 kt becoming W after midnight. Rain.   Seas 1 ft or less.

      SSW 8kt
      < 1ft

    • Wednesday

      Wednesday:WSW wind 5 to 8 kt becoming S in the afternoon. A chance of rain before 1pm.   Seas 1 ft or less.

      WSW 8kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SSE wind around 6 kt becoming S after midnight. A chance of rain.   Seas 1 ft or less.

      S 6kt
      < 1ft

    • Thursday

      Thursday:S wind 7 to 9 kt becoming SSE in the afternoon. A chance of rain.   Seas 1 ft or less.

      S 9kt
      < 1ft

    • Thursday Night

      Thursday Night:ESE wind 9 to 11 kt becoming ENE in the evening. A chance of rain.   Seas 1 ft or less.

      ENE 11kt
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 6:17 pm EST Mar 1, 2026
Forecast Valid: 6pm EST Mar 1, 2026-6pm EDT Mar 8, 2026

View Nearby Observations

Detailed Forecast


Tonight
N wind 7 to 11 kt. Mostly clear. Seas 1 ft or less.
Monday
N wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Increasing clouds. Seas 1 ft or less.
Monday Night
SSE wind around 6 kt. Increasing clouds. Seas 1 ft or less.
Tuesday
SSE wind around 7 kt becoming E in the afternoon. Rain likely, possibly mixed with snow before 1pm, then rain. Seas 1 ft or less.
Tuesday Night
S wind around 8 kt becoming W after midnight. Rain. Seas 1 ft or less.
Wednesday
WSW wind 5 to 8 kt becoming S in the afternoon. A chance of rain before 1pm. Seas 1 ft or less.
Wednesday Night
SSE wind around 6 kt becoming S after midnight. A chance of rain. Seas 1 ft or less.
Thursday
S wind 7 to 9 kt becoming SSE in the afternoon. A chance of rain. Seas 1 ft or less.
Thursday Night
ESE wind 9 to 11 kt becoming ENE in the evening. 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: 6:17 pm EST Mar 1, 2026
Forecast Valid: 6pm EST Mar 1, 2026-6pm EDT Mar 8, 2026
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