Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Northern Plains and Upper Midwest

Dangerous heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms will produce damaging winds and heavy rainfall over portions of the northern/central Plains into the mid/upper-Mississippi Valleys today. Read More >

For More Weather Information:

New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Tonight
N 6kt⇓
< 1ft
Friday
Light Wind
< 1ft
Friday Night
SSW 6kt⇓
< 1ft
Saturday
⇑S 6kt
< 1ft
Saturday Night
S 9kt
< 1ft
Sunday
S 10kt
< 1ft
Sunday Night
S 9kt
< 1ft
Monday
SSW 8kt
< 1ft
Monday Night
WSW 6kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 3:41 pm EDT Jul 30, 2026
Forecast Valid: 6pm EDT Jul 30, 2026-6pm EDT Aug 6, 2026

View Nearby Observations

Detailed Forecast

Tonight

N wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms before 8pm. Seas 1 ft or less.

Friday

Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

Friday Night

SSW wind around 6 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

Saturday

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Saturday Night

S wind 7 to 9 kt. Mostly cloudy. Seas 1 ft or less.

Sunday

S wind 7 to 10 kt. Mostly cloudy. Seas 1 ft or less.

Sunday Night

S wind around 9 kt. A chance of showers. Seas 1 ft or less.

Monday

SSW wind 6 to 8 kt. A chance of showers, with thunderstorms also possible after 2pm. Seas 1 ft or less.

Monday Night

WSW wind around 6 kt becoming NNW after midnight. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas 1 ft or less.

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.