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Stonington, CT Marine Weather Forecast

Today - 78°F
Aug 18, 2026
5 mph W
Partly Sunny then Slight Chance Rain Showers
A slight chance of rain showers after 5pm. Partly sunny. High near 78, with temperatures falling to around 76 in the afternoon. West wind around 5 mph. Chance of precipitation is 20%.
Tonight - 70°F
Aug 18, 2026
5 mph W
Slight Chance Rain Showers then Partly Cloudy
A slight chance of rain showers before 11pm. Partly cloudy, with a low around 70. West wind around 5 mph. Chance of precipitation is 20%.
Wednesday - 80°F
Aug 19, 2026
2 to 8 mph W
Sunny
Sunny. High near 80, with temperatures falling to around 78 in the afternoon. West wind 2 to 8 mph.
Wednesday Night - 72°F
Aug 19, 2026
5 to 8 mph SW
Mostly Clear
Mostly clear, with a low around 72. Southwest wind 5 to 8 mph.
Thursday - 78°F
Aug 20, 2026
6 mph W
Mostly Sunny then Chance Rain Showers
A chance of rain showers after 2pm. Mostly sunny. High near 78, with temperatures falling to around 76 in the afternoon. West wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Thursday Night - 68°F
Aug 20, 2026
6 mph W
Chance Showers And Thunderstorms
A chance of rain showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Friday - 77°F
Aug 21, 2026
7 mph NE
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Partly sunny, with a high near 77.
Friday Night - 69°F
Aug 21, 2026
3 to 7 mph E
Slight Chance Rain Showers
A slight chance of rain showers. Mostly cloudy, with a low around 69.
Saturday - 75°F
Aug 22, 2026
8 to 12 mph E
Chance Rain Showers
A chance of rain showers. Partly sunny, with a high near 75. Chance of precipitation is 40%.
Saturday Night - 69°F
Aug 22, 2026
7 to 10 mph E
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Sunday - 76°F
Aug 23, 2026
9 mph SE
Chance Rain Showers
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
Sunday Night - 68°F
Aug 23, 2026
9 mph SW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
Monday - 76°F
Aug 24, 2026
8 to 13 mph W
Slight Chance Rain Showers then Mostly Sunny
A slight chance of rain showers before 8am. Mostly sunny, with a high near 76.
Monday Night - 67°F
Aug 24, 2026
8 to 12 mph W
Mostly Clear
Mostly clear, with a low around 67.

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