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Guilford Harbor, CT Marine Weather Forecast

Overnight - 16°F
Dec 05, 2025
5 mph N
Mostly Clear
Mostly clear. Low around 16, with temperatures rising to around 18 overnight. Wind chill values as low as 11. North wind around 5 mph.
Friday - 35°F
Dec 05, 2025
2 to 6 mph E
Mostly Sunny
Mostly sunny. High near 35, with temperatures falling to around 31 in the afternoon. Wind chill values as low as 10. East wind 2 to 6 mph.
Friday Night - 29°F
Dec 05, 2025
2 mph NE
Mostly Cloudy then Slight Chance Very Light Snow
A slight chance of snow after 4am. Mostly cloudy. Low around 29, with temperatures rising to around 31 overnight. Northeast wind around 2 mph. Chance of precipitation is 20%.
Saturday - 42°F
Dec 06, 2025
2 to 8 mph NW
Slight Chance Very Light Snow then Mostly Cloudy
A slight chance of snow before 7am, then a slight chance of snow and a slight chance of freezing rain between 7am and 8am, then a slight chance of rain and snow between 8am and 10am. Mostly cloudy, with a high near 42. Northwest wind 2 to 8 mph. Chance of precipitation is 20%.
Saturday Night - 30°F
Dec 06, 2025
7 mph NW
Partly Cloudy
Partly cloudy, with a low around 30. Northwest wind around 7 mph.
Sunday - 40°F
Dec 07, 2025
6 mph NE
Partly Sunny
Partly sunny. High near 40, with temperatures falling to around 37 in the afternoon.
Sunday Night - 26°F
Dec 07, 2025
2 to 14 mph W
Chance Snow Showers
A chance of snow showers between 7pm and 4am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Monday - 33°F
Dec 08, 2025
16 to 21 mph NW
Mostly Sunny
Mostly sunny, with a high near 33.
Monday Night - 18°F
Dec 08, 2025
3 to 15 mph NW
Mostly Clear
Mostly clear, with a low around 18.
Tuesday - 38°F
Dec 09, 2025
3 to 15 mph W
Partly Sunny then Slight Chance Rain And Snow
A slight chance of rain and snow after 1pm. Partly sunny, with a high near 38.
Tuesday Night - 33°F
Dec 09, 2025
9 to 13 mph SW
Slight Chance Rain And Snow
A slight chance of rain and snow before 1am. Mostly cloudy, with a low around 33.
Wednesday - 47°F
Dec 10, 2025
9 to 15 mph SW
Mostly Cloudy then Chance Light Rain
A chance of rain after 1pm. Mostly cloudy, with a high near 47. Chance of precipitation is 30%.
Wednesday Night - 40°F
Dec 10, 2025
14 mph SW
Light Rain Likely
Rain likely. Cloudy, with a low around 40. Chance of precipitation is 60%.
Thursday - 44°F
Dec 11, 2025
12 to 16 mph W
Chance Light Rain
A chance of rain. Mostly cloudy, with a high near 44.

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