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Guilford Harbor, CT Marine Weather Forecast

Tonight - 42°F
Apr 01, 2026
3 to 14 mph NE
Rain Showers
Rain showers. Cloudy. Low around 42, with temperatures rising to around 44 overnight. Northeast wind 3 to 14 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Thursday - 44°F
Apr 02, 2026
14 mph NE
Rain Showers Likely then Cloudy
Rain showers likely before 11am. Cloudy. High near 44, with temperatures falling to around 42 in the afternoon. Northeast wind around 14 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Thursday Night - 40°F
Apr 02, 2026
5 to 10 mph E
Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 2am. Cloudy, with a low around 40. East wind 5 to 10 mph. Chance of precipitation is 20%.
Friday - 54°F
Apr 03, 2026
3 to 8 mph SE
Slight Chance Rain Showers then Mostly Cloudy
A slight chance of rain showers before 8am. Mostly cloudy. High near 54, with temperatures falling to around 52 in the afternoon. Southeast wind 3 to 8 mph. Chance of precipitation is 20%.
Friday Night - 50°F
Apr 03, 2026
5 to 9 mph SW
Mostly Cloudy
Mostly cloudy, with a low around 50. Southwest wind 5 to 9 mph.
Saturday - 61°F
Apr 04, 2026
2 to 10 mph S
Partly Sunny then Chance Rain Showers
A chance of rain showers after 2pm. Partly sunny. High near 61, with temperatures falling to around 55 in the afternoon. Chance of precipitation is 30%.
Saturday Night - 45°F
Apr 04, 2026
10 to 15 mph SE
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
Sunday - 56°F
Apr 05, 2026
14 to 17 mph S
Rain Showers
Rain showers. Mostly cloudy, with a high near 56. Chance of precipitation is 80%.
Sunday Night - 41°F
Apr 05, 2026
10 to 15 mph W
Rain Showers
Rain showers before 2am. Mostly cloudy, with a low around 41. Chance of precipitation is 80%.
Monday - 50°F
Apr 06, 2026
12 mph W
Mostly Sunny
Mostly sunny, with a high near 50.
Monday Night - 38°F
Apr 06, 2026
3 to 8 mph NW
Mostly Clear
Mostly clear, with a low around 38.
Tuesday - 48°F
Apr 07, 2026
5 to 9 mph NW
Mostly Sunny
Mostly sunny, with a high near 48.
Tuesday Night - 33°F
Apr 07, 2026
9 mph NW
Partly Cloudy
Partly cloudy, with a low around 33.
Wednesday - 45°F
Apr 08, 2026
6 to 10 mph NW
Sunny
Sunny, with a high near 45.

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