Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Hazardous Weather Conditions

For More Weather Information:

New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

Tonight
SSW 9kt
2ft
Tuesday
⇑S 17kt
2-3ft

Small Craft Advisory
Tuesday Night
SW 21kt
4-5ft

Small Craft Advisory
Wednesday
SW 17kt
3-4ft
Wednesday Night
SW 19kt
3-4ft
Thursday
SSW 16kt
3ft
Thursday Night
SSW 17kt⇓
4ft
Friday
⇑SW 14kt
2ft
Friday Night
SW 9kt
2ft

Associated Zone Forecast which includes this point

Last Update: 3:53 pm EDT Jun 29, 2026
Forecast Valid: 5pm EDT Jun 29, 2026-6pm EDT Jul 6, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH

Tonight

SSW wind 6 to 9 kt. Partly cloudy. Seas around 2 ft.

Tuesday

S wind 7 to 12 kt increasing to 12 to 17 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.

Tuesday Night

SW wind 16 to 21 kt. A slight chance of showers and thunderstorms after 2am. Seas 4 to 5 ft.

Wednesday

SW wind 12 to 17 kt. A slight chance of showers and thunderstorms before 8am. Seas 3 to 4 ft.

Wednesday Night

SW wind 15 to 19 kt. A slight chance of showers and thunderstorms before 2am. Seas 3 to 4 ft.

Thursday

SSW wind 11 to 16 kt. Sunny. Seas around 3 ft.

Thursday Night

SSW wind 14 to 17 kt becoming W 10 to 13 kt after midnight. Mostly clear. Seas 4 ft subsiding to 2 ft.

Friday

W wind 8 to 11 kt becoming SW 11 to 14 kt in the afternoon. Sunny. Seas around 2 ft.

Friday Night

SW wind 6 to 9 kt becoming WNW in the evening. A chance of showers and thunderstorms between 8pm and 2am. Seas around 2 ft.

*Notices:

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.
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.