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Stony Brook, NY Marine Weather Forecast

Tonight - 59°F
May 16, 2026
6 to 14 mph SW
Chance Rain Showers
A chance of rain showers after 11pm. Partly cloudy, with a low around 59. Southwest wind 6 to 14 mph, with gusts as high as 25 mph.
Sunday - 83°F
May 17, 2026
5 to 9 mph W
Chance Rain Showers then Sunny
A chance of rain showers before 8am. Sunny. High near 83, with temperatures falling to around 80 in the afternoon. West wind 5 to 9 mph.
Sunday Night - 59°F
May 17, 2026
1 to 8 mph NE
Partly Cloudy
Partly cloudy, with a low around 59. Northeast wind 1 to 8 mph.
Monday - 75°F
May 18, 2026
2 to 9 mph SE
Sunny
Sunny. High near 75, with temperatures falling to around 71 in the afternoon. Southeast wind 2 to 9 mph.
Monday Night - 58°F
May 18, 2026
3 to 7 mph S
Mostly Clear
Mostly clear, with a low around 58. South wind 3 to 7 mph.
Tuesday - 81°F
May 19, 2026
5 to 13 mph SW
Sunny
Sunny, with a high near 81.
Tuesday Night - 66°F
May 19, 2026
12 mph SW
Partly Cloudy
Partly cloudy, with a low around 66.
Wednesday - 83°F
May 20, 2026
9 to 15 mph SW
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 50%.
Wednesday Night - 58°F
May 20, 2026
6 to 12 mph W
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.
Thursday - 69°F
May 21, 2026
9 mph N
Chance Rain Showers
A chance of rain showers. Partly sunny, with a high near 69. Chance of precipitation is 40%.
Thursday Night - 53°F
May 21, 2026
7 mph N
Chance Rain Showers then Mostly Cloudy
A chance of rain showers before 8pm. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Friday - 65°F
May 22, 2026
9 mph NE
Slight Chance Rain Showers
A slight chance of rain showers after 8am. Mostly cloudy, with a high near 65.
Friday Night - 51°F
May 22, 2026
0 to 7 mph E
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Saturday - 66°F
May 23, 2026
3 to 12 mph E
Chance Rain Showers
A chance of rain showers. Partly sunny, with a high near 66.

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