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Greenport, NY Marine Weather Forecast

Overnight - 44°F
Dec 19, 2025
9 to 20 mph S
Rain Showers
Rain showers. Cloudy. Low around 44, with temperatures rising to around 51 overnight. South wind 9 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 80%.
Friday - 56°F
Dec 19, 2025
22 to 29 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 22 to 29 mph, with gusts as high as 52 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night - 30°F
Dec 19, 2025
18 to 26 mph W
Slight Chance Rain Showers then Partly Cloudy
A slight chance of rain showers before 10pm. Partly cloudy, with a low around 30. Wind chill values as low as 18. West wind 18 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday - 43°F
Dec 20, 2025
8 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 20. West wind 8 to 17 mph.
Saturday Night - 35°F
Dec 20, 2025
8 to 14 mph SW
Mostly Cloudy
Mostly cloudy. Low around 35, with temperatures rising to around 41 overnight. Southwest wind 8 to 14 mph.
Sunday - 45°F
Dec 21, 2025
14 to 17 mph W
Mostly Sunny
Mostly sunny. High near 45, with temperatures falling to around 40 in the afternoon.
Sunday Night - 26°F
Dec 21, 2025
17 mph NW
Mostly Clear
Mostly clear, with a low around 26.
Monday - 36°F
Dec 22, 2025
9 to 15 mph NW
Sunny
Sunny, with a high near 36.
Monday Night - 27°F
Dec 22, 2025
8 mph W
Mostly Cloudy then Slight Chance Light Snow
A slight chance of snow after 1am. Mostly cloudy, with a low around 27.
Tuesday - 42°F
Dec 23, 2025
8 to 14 mph SW
Rain And Snow Likely
A slight chance of snow before 7am, then rain and snow likely between 7am and 1pm, then rain and snow likely. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.
Tuesday Night - 33°F
Dec 23, 2025
13 mph W
Rain And Snow Likely
Rain and snow likely before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Wednesday - 42°F
Dec 24, 2025
9 to 13 mph NW
Mostly Sunny
Mostly sunny, with a high near 42.
Wednesday Night - 31°F
Dec 24, 2025
8 mph NW
Partly Cloudy then Slight Chance Light Rain
A slight chance of rain after 1am. Partly cloudy, with a low around 31.
Christmas Day - 46°F
Dec 25, 2025
6 to 10 mph SW
Chance Light Rain
A chance of rain. Partly sunny, with a high near 46.

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