Dangerous, Heat Wave Persists in the Eastern U.S.; Severe Weather Expected in the Central Plains and Mid-Atlantic

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorms are expected to produce damaging wind gusts from the Upper Ohio Valley into the Mid Atlantic, and across the central Great Plains this afternoon and evening. Large hail and heavy rain is also possible across the Great Plains. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

For More Weather Information:

New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Independence Day
W 7kt
1ft
Tonight
Light Wind
< 1ft
Sunday
ENE 6kt
1ft
Sunday Night
E 9kt
1ft
Monday
E 13kt
1ft
Monday Night
E 13kt
1ft
Tuesday
ENE 14kt
1ft
Tuesday Night
ENE 9kt
1ft
Wednesday
NE 6kt
1ft

Associated Zone Forecast which includes this point

Last Update: 3:48 am EDT Jul 4, 2026
Forecast Valid: 7am EDT Jul 4, 2026-6pm EDT Jul 10, 2026

View Nearby Observations

Detailed Forecast

Independence Day

W wind 5 to 7 kt. Showers likely and possibly a thunderstorm after 2pm. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. Showers and thunderstorms likely before 11pm, then a chance of showers. Seas 1 ft or less.

Sunday

ENE wind around 6 kt becoming N in the morning. Showers likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas around 1 ft.

Sunday Night

E wind 7 to 9 kt. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Seas around 1 ft.

Monday

E wind around 13 kt, with gusts as high as 20 kt. Showers, with thunderstorms also possible after 8am. Some of the storms could produce heavy rainfall. Seas around 1 ft.

Monday Night

E wind around 13 kt. Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Seas around 1 ft.

Tuesday

ENE wind 12 to 14 kt, with gusts as high as 20 kt. Showers likely, with thunderstorms also possible after 2pm. Seas around 1 ft.

Tuesday Night

ENE wind 6 to 9 kt. A chance of showers and thunderstorms. Seas around 1 ft.

Wednesday

NE wind around 6 kt becoming ESE in the afternoon. Partly sunny. Seas around 1 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.