Dangerous Heat Wave Continues; Enhanced Area of Severe Thunderstorms Today

A prolonged, dangerous heat wave will continue today in the Midwest and Mississippi Valley, and persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Widespread moderate to extreme HeatRisk is forecast. Scattered wind damage and large hail are expected from severe thunderstorms impacting parts of Nebraska into Iowa today. Read More >

Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]
    • Late Afternoon

      Late Afternoon:SSW wind around 15 kt, with gusts as high as 21 kt. Scattered showers and thunderstorms after 5pm.   Seas 2 to 3 ft.

      SSW 15kt
      2-3ft

    • Tonight

      Tonight:SW wind 7 to 11 kt becoming W after midnight. Scattered showers and thunderstorms before 2am.   Seas 2 to 3 ft.

      SW 11kt
      2-3ft

    • Independence Day

      Independence Day:W wind 7 to 10 kt becoming SSW 10 to 13 kt in the afternoon. Scattered showers and thunderstorms after 2pm.   Seas around 2 ft.

      ⇑SSW 13kt
      2ft

    • Saturday Night

      Saturday Night:SW wind 6 to 9 kt becoming WNW after midnight. Scattered showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then a chance of showers after 2am.   Seas around 2 ft.

      SW 9kt
      2ft

    • Sunday

      Sunday:ENE wind 8 to 10 kt becoming ESE in the afternoon. A chance of showers, mainly before 2pm.   Seas around 2 ft.

      ESE 10kt
      2ft

    • Sunday Night

      Sunday Night:ESE wind around 9 kt. Showers likely after 8pm.   Seas around 2 ft.

      ESE 9kt
      2ft

    • Monday

      Monday:E wind 12 to 15 kt. Showers likely, with thunderstorms also possible after 2pm.   Seas 3 to 4 ft.

      E 15kt
      3-4ft

    • Monday Night

      Monday Night:ESE wind 13 to 15 kt. Showers likely and possibly a thunderstorm.   Seas 3 to 4 ft.

      ESE 15kt
      3-4ft

    • Tuesday

      Tuesday:E wind 13 to 15 kt. A chance of showers, with thunderstorms also possible after 2pm.   Seas around 3 ft.

      E 15kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 3:34 pm EDT Jul 3, 2026
Forecast Valid: 4pm EDT Jul 3, 2026-6pm EDT Jul 10, 2026

View Nearby Observations

Detailed Forecast


Late Afternoon
SSW wind around 15 kt, with gusts as high as 21 kt. Scattered showers and thunderstorms after 5pm. Seas 2 to 3 ft.
Tonight
SW wind 7 to 11 kt becoming W after midnight. Scattered showers and thunderstorms before 2am. Seas 2 to 3 ft.
Independence Day
W wind 7 to 10 kt becoming SSW 10 to 13 kt in the afternoon. Scattered showers and thunderstorms after 2pm. Seas around 2 ft.
Saturday Night
SW wind 6 to 9 kt becoming WNW after midnight. Scattered showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then a chance of showers after 2am. Seas around 2 ft.
Sunday
ENE wind 8 to 10 kt becoming ESE in the afternoon. A chance of showers, mainly before 2pm. Seas around 2 ft.
Sunday Night
ESE wind around 9 kt. Showers likely after 8pm. Seas around 2 ft.
Monday
E wind 12 to 15 kt. Showers likely, with thunderstorms also possible after 2pm. Seas 3 to 4 ft.
Monday Night
ESE wind 13 to 15 kt. Showers likely and possibly a thunderstorm. Seas 3 to 4 ft.
Tuesday
E wind 13 to 15 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas around 3 ft.

Winds and seas may be higher in and near tstms.

*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: 3:34 pm EDT Jul 3, 2026
Forecast Valid: 4pm EDT Jul 3, 2026-6pm EDT Jul 10, 2026
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