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Portland, CT Marine Weather Forecast

Station NWHC3 - 8465705 - New Haven, CT

December 21, 2025 12:30 am EST
Location: 41.283N 72.908W
Wind Direction: SW (230°)
Wind Speed: 14.0 knots
Wind Gust: 18.1 knots
Atmospheric Pressure: 30.02 in (1016.5 mb)
Air Temperature: 39.6°F (4.2°C)
Water Temperature: 38.5°F (3.6°C)


Overnight - 36°F
Dec 21, 2025
12 mph SW
Mostly Cloudy
Mostly cloudy. Low around 36, with temperatures rising to around 39 overnight. Southwest wind around 12 mph.
Sunday - 44°F
Dec 21, 2025
12 to 15 mph W
Mostly Sunny
Mostly sunny. High near 44, with temperatures falling to around 36 in the afternoon. West wind 12 to 15 mph, with gusts as high as 29 mph.
Sunday Night - 25°F
Dec 21, 2025
13 mph NW
Mostly Clear
Mostly clear, with a low around 25. Wind chill values as low as 15. Northwest wind around 13 mph, with gusts as high as 25 mph.
Monday - 37°F
Dec 22, 2025
8 to 12 mph W
Sunny
Sunny, with a high near 37. Wind chill values as low as 14. West wind 8 to 12 mph.
Monday Night - 30°F
Dec 22, 2025
5 to 8 mph W
Mostly Cloudy then Chance Light Snow
A chance of snow after 1am. Mostly cloudy, with a low around 30. West wind 5 to 8 mph. Chance of precipitation is 50%. New snow accumulation of less than half an inch possible.
Tuesday - 41°F
Dec 23, 2025
6 to 10 mph SW
Rain And Snow
A chance of snow before 7am, then rain and snow. Cloudy, with a high near 41. Chance of precipitation is 90%. New snow accumulation of around one inch possible.
Tuesday Night - 32°F
Dec 23, 2025
6 to 12 mph W
Slight Chance Rain And Snow
A chance of rain before 10pm, then a slight chance of rain and snow between 10pm and 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 50%.
Wednesday - 41°F
Dec 24, 2025
7 to 14 mph NW
Mostly Sunny
Mostly sunny, with a high near 41.
Wednesday Night - 29°F
Dec 24, 2025
6 mph W
Partly Cloudy then Slight Chance Light Snow
A slight chance of snow after 1am. Partly cloudy, with a low around 29.
Christmas Day - 42°F
Dec 25, 2025
5 to 9 mph SW
Slight Chance Light Snow then Chance Light Rain
A slight chance of snow before 7am, then a chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.
Thursday Night - 31°F
Dec 25, 2025
6 mph S
Chance Light Rain
A chance of rain before 1am, then a chance of rain and snow. Cloudy, with a low around 31. Chance of precipitation is 40%.
Friday - 44°F
Dec 26, 2025
6 to 12 mph W
Chance Rain And Snow
A chance of rain and snow. Cloudy, with a high near 44. Chance of precipitation is 50%.
Friday Night - 27°F
Dec 26, 2025
9 mph NW
Chance Light Rain then Mostly Cloudy
A chance of rain before 7pm. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Saturday - 36°F
Dec 27, 2025
9 mph N
Mostly Sunny
Mostly sunny, with a high near 36.

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