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Fishers Island, NY Marine Weather Forecast

Overnight - 70°F
Aug 18, 2026
6 mph N
Patchy Fog
Patchy fog after 2am. Mostly cloudy, with a low around 70. North wind around 6 mph.
Tuesday - 79°F
Aug 18, 2026
3 to 7 mph W
Patchy Fog then Mostly Sunny
Patchy fog before 8am. Mostly sunny, with a high near 79. West wind 3 to 7 mph.
Tuesday Night - 68°F
Aug 18, 2026
7 mph W
Partly Cloudy
Partly cloudy, with a low around 68. West wind around 7 mph.
Wednesday - 79°F
Aug 19, 2026
2 to 9 mph W
Sunny
Sunny, with a high near 79. West wind 2 to 9 mph.
Wednesday Night - 70°F
Aug 19, 2026
9 mph SW
Mostly Clear
Mostly clear, with a low around 70. Southwest wind around 9 mph.
Thursday - 78°F
Aug 20, 2026
3 to 7 mph W
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny. High near 78, with temperatures falling to around 76 in the afternoon. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Thursday Night - 69°F
Aug 20, 2026
3 to 7 mph W
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Friday - 76°F
Aug 21, 2026
5 to 8 mph NE
Chance Rain Showers
A chance of rain showers. Partly sunny, with a high near 76. Chance of precipitation is 50%.
Friday Night - 69°F
Aug 21, 2026
6 mph NE
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Saturday - 76°F
Aug 22, 2026
7 to 10 mph E
Chance Rain Showers
A chance of rain showers. Partly sunny, with a high near 76. Chance of precipitation is 50%.
Saturday Night - 70°F
Aug 22, 2026
8 mph E
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
Sunday - 77°F
Aug 23, 2026
9 mph SE
Chance Rain Showers
A chance of rain showers. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Sunday Night - 70°F
Aug 23, 2026
9 mph SW
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
Monday - 78°F
Aug 24, 2026
7 to 12 mph W
Slight Chance Rain Showers
A slight chance of rain showers. Mostly sunny, with a high near 78.

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