Dangerous Heat Wave Continues; Severe Thunderstorms and Heavy Rain from the Central Plains to the Midwest

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. Severe thunderstorm are expected from the northern/central Plains to the Mid-Atlantic. Isolated slash flooding is possible from the central Plains to the Upper Midwest. 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]

Tonight
W 6kt
1ft
Independence Day
WNW 6kt
1ft
Saturday Night
WSW 6kt⇓
< 1ft
Sunday
NE 6kt
1ft
Sunday Night
ESE 7kt
1ft
Monday
E 11kt
1ft
Monday Night
E 12kt
1ft
Tuesday
E 11kt
1ft
Tuesday Night
NE 8kt
1ft

Associated Zone Forecast which includes this point

Last Update: 5:14 pm EDT Jul 3, 2026
Forecast Valid: 10pm EDT Jul 3, 2026-6pm EDT Jul 10, 2026

View Nearby Observations

Detailed Forecast

Tonight

W wind around 6 kt. Scattered showers and thunderstorms, mainly before 11pm. Seas around 1 ft.

Independence Day

WNW wind around 6 kt. Scattered showers and thunderstorms after 2pm. Seas around 1 ft.

Saturday Night

WSW wind around 6 kt becoming variable and less than 5 kt in the evening. Scattered showers and thunderstorms. Seas 1 ft or less.

Sunday

NE wind around 6 kt becoming E in the afternoon. A chance of showers. Seas around 1 ft.

Sunday Night

ESE wind 5 to 7 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Seas around 1 ft.

Monday

E wind 9 to 11 kt. Showers likely, with thunderstorms also possible after 2pm. Seas around 1 ft.

Monday Night

E wind 9 to 12 kt. Showers and possibly a thunderstorm. Seas around 1 ft.

Tuesday

E wind 9 to 11 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas around 1 ft.

Tuesday Night

NE wind 6 to 8 kt. A chance of showers and thunderstorms. 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.