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West Islip, NY Marine Weather Forecast

Overnight - 46°F
Dec 19, 2025
14 to 26 mph S
Rain Showers
Rain showers. Cloudy. Low around 46, with temperatures rising to around 51 overnight. South wind 14 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 90%.
Friday - 56°F
Dec 19, 2025
24 to 35 mph SW
Showers And Thunderstorms
Rain showers before 7am, then showers and thunderstorms. Mostly cloudy. High near 56, with temperatures falling to around 46 in the afternoon. Southwest wind 24 to 35 mph, with gusts as high as 53 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Friday Night - 28°F
Dec 19, 2025
18 to 31 mph W
Slight Chance Rain Showers then Partly Cloudy
A slight chance of rain showers before 7pm. Partly cloudy. Low around 28, with temperatures rising to around 30 overnight. Wind chill values as low as 17. West wind 18 to 31 mph, with gusts as high as 45 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Saturday - 43°F
Dec 20, 2025
10 to 17 mph W
Mostly Sunny
Mostly sunny. High near 43, with temperatures falling to around 40 in the afternoon. Wind chill values as low as 17. West wind 10 to 17 mph.
Saturday Night - 36°F
Dec 20, 2025
10 to 18 mph SW
Mostly Cloudy
Mostly cloudy. Low around 36, with temperatures rising to around 41 overnight. Southwest wind 10 to 18 mph.
Sunday - 45°F
Dec 21, 2025
16 to 21 mph W
Mostly Sunny
Mostly sunny. High near 45, with temperatures falling to around 40 in the afternoon.
Sunday Night - 27°F
Dec 21, 2025
16 to 21 mph NW
Mostly Clear
Mostly clear, with a low around 27.
Monday - 37°F
Dec 22, 2025
9 to 16 mph NW
Sunny
Sunny, with a high near 37.
Monday Night - 30°F
Dec 22, 2025
9 mph W
Mostly Cloudy then Slight Chance Light Snow
A slight chance of snow after 1am. Mostly cloudy, with a low around 30.
Tuesday - 42°F
Dec 23, 2025
10 to 18 mph SW
Rain And Snow Likely
A slight chance of snow before 7am, then rain and snow likely between 7am and 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.
Tuesday Night - 35°F
Dec 23, 2025
13 to 16 mph W
Chance Rain And Snow then Mostly Cloudy
A chance of rain and snow before 7pm. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
Wednesday - 43°F
Dec 24, 2025
9 to 14 mph NW
Mostly Sunny
Mostly sunny, with a high near 43.
Wednesday Night - 33°F
Dec 24, 2025
7 mph NW
Mostly Cloudy then Slight Chance Light Rain
A slight chance of rain after 1am. Mostly cloudy, with a low around 33.
Christmas Day - 47°F
Dec 25, 2025
7 to 13 mph SW
Chance Light Rain
A chance of rain. Mostly cloudy, with a high near 47.

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