Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

For More Weather Information:

New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

Saturday
N 10kt⇓
< 1ft
Saturday Night
⇑SW 6kt
< 1ft
Sunday
SW 9kt
< 1ft
Sunday Night
SSW 9kt
< 1ft
Monday
Light Wind
< 1ft
Monday Night
Light Wind
< 1ft
Tuesday
⇑SSE 6kt
< 1ft
Tuesday Night
SE 7kt
< 1ft
Wednesday
S 7kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:28 am EDT Aug 29, 2026
Forecast Valid: 4am EDT Aug 29, 2026-6pm EDT Sep 4, 2026

View Nearby Observations

Detailed Forecast

Saturday

N wind 5 to 10 kt becoming variable and less than 5 kt in the afternoon. Sunny. Seas 1 ft or less.

Saturday Night

Variable winds less than 5 kt becoming SW around 6 kt in the evening. Mostly clear. Seas 1 ft or less.

Sunday

SW wind 5 to 9 kt. A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Sunday Night

SSW wind 6 to 9 kt becoming W after midnight. A slight chance of showers and thunderstorms, then a chance of showers after 8pm. Seas 1 ft or less.

Monday

Variable winds 5 kt or less. A slight chance of showers. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming SSE around 6 kt in the morning. A chance of showers. Seas 1 ft or less.

Tuesday Night

SE wind around 7 kt. Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Seas 1 ft or less.

Wednesday

S wind around 7 kt. A chance of showers. 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.