Dangerous Heat to Continue through the Holiday Weekend; Severe Storms on Friday from the Plains to the Mid-Atlantic

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing across the eastern U.S. through the Independence Day holiday weekend. Peak heat indices of up to 115 degrees are possible. Isolated to scattered severe thunderstorms are possible from the northern/central Plains into the Midwest, Ohio Valley, and Mid-Atlantic Friday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

For More Weather Information:

New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

Overnight
SW 11kt
3ft
Friday
⇑SSW 13kt
2-3ft
Friday Night
SW 11kt
2-3ft
Independence Day
⇑SW 13kt
2ft
Saturday Night
W 9kt
2ft
Sunday
SE 9kt
2ft
Sunday Night
SE 8kt
2ft
Monday
E 15kt
2-3ft
Monday Night
E 16kt
3ft

Associated Zone Forecast which includes this point

Last Update: 7:49 pm EDT Jul 2, 2026
Forecast Valid: 12am EDT Jul 3, 2026-6pm EDT Jul 9, 2026

View Nearby Observations

Detailed Forecast

Overnight

SW wind 9 to 11 kt becoming W. Clear. Seas around 3 ft.

Friday

W wind 5 to 8 kt becoming SSW 10 to 13 kt in the afternoon. Sunny. Seas 2 to 3 ft.

Friday Night

SW wind 6 to 11 kt becoming W after midnight. A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas 2 to 3 ft.

Independence Day

W wind 6 to 9 kt becoming SW 10 to 13 kt in the afternoon. Showers likely and possibly a thunderstorm after 2pm. Seas around 2 ft.

Saturday Night

W wind 6 to 9 kt becoming N after midnight. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Seas around 2 ft.

Sunday

NNE wind 6 to 9 kt becoming SE in the afternoon. A chance of showers after 2pm. Seas around 2 ft.

Sunday Night

SE wind 5 to 8 kt. Showers likely, mainly after 2am. Seas around 2 ft.

Monday

E wind 10 to 15 kt. Showers likely. Seas 2 to 3 ft.

Monday Night

E wind 13 to 16 kt. A chance of showers before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Seas around 3 ft.

Winds and seas may be higher in and near tstms.

*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.