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Onset, MA Marine Weather Forecast

Station WAXM3 - Carriage House, Waquoit Bay Reserve, MA

December 19, 2025 6:45 pm EST
Location: 41.582N 70.525W
Wind Direction: W (260°)
Wind Speed: 5.1 knots
Atmospheric Pressure: 29.35 in (994.0 mb)
Air Temperature: 47.1°F (8.4°C)
Dew Point: 44.1°F (6.7°C)


Tonight - 28°F
Dec 19, 2025
18 to 23 mph W
Chance Light Rain then Partly Cloudy
A chance of rain before 11pm. Partly cloudy, with a low around 28. West wind 18 to 23 mph, with gusts as high as 44 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Saturday - 42°F
Dec 20, 2025
7 to 17 mph W
Sunny
Sunny, with a high near 42. West wind 7 to 17 mph, with gusts as high as 35 mph.
Saturday Night - 34°F
Dec 20, 2025
7 to 14 mph SW
Mostly Cloudy
Mostly cloudy. Low around 34, with temperatures rising to around 41 overnight. Southwest wind 7 to 14 mph, with gusts as high as 28 mph.
Sunday - 45°F
Dec 21, 2025
15 mph W
Mostly Sunny
Mostly sunny, with a high near 45. West wind around 15 mph, with gusts as high as 29 mph.
Sunday Night - 23°F
Dec 21, 2025
16 mph NW
Mostly Clear
Mostly clear, with a low around 23. Northwest wind around 16 mph, with gusts as high as 31 mph.
Monday - 35°F
Dec 22, 2025
8 to 15 mph NW
Sunny
Sunny, with a high near 35. Northwest wind 8 to 15 mph, with gusts as high as 28 mph.
Monday Night - 25°F
Dec 22, 2025
8 mph W
Partly Cloudy then Chance Light Snow
A chance of snow after 4am. Partly cloudy, with a low around 25. West wind around 8 mph. Chance of precipitation is 30%.
Tuesday - 42°F
Dec 23, 2025
8 to 14 mph SW
Chance Light Snow then Rain And Snow
A chance of snow before 8am, then rain and snow. Cloudy, with a high near 42. Southwest wind 8 to 14 mph. Chance of precipitation is 80%. New snow accumulation of less than half an inch possible.
Tuesday Night - 31°F
Dec 23, 2025
13 mph W
Light Rain Likely
Rain likely before 3am. Mostly cloudy, with a low around 31. West wind around 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Wednesday - 40°F
Dec 24, 2025
9 to 14 mph NW
Sunny
Sunny, with a high near 40. Northwest wind 9 to 14 mph, with gusts as high as 24 mph.
Wednesday Night - 27°F
Dec 24, 2025
8 mph NW
Partly Cloudy
Partly cloudy, with a low around 27. Northwest wind around 8 mph.
Christmas Day - 44°F
Dec 25, 2025
6 to 10 mph SW
Chance Light Rain
A chance of rain after 8am. Mostly cloudy, with a high near 44. Southwest wind 6 to 10 mph. Chance of precipitation is 40%.
Thursday Night - 36°F
Dec 25, 2025
10 mph SW
Chance Light Rain
A chance of rain. Cloudy, with a low around 36. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Friday - 48°F
Dec 26, 2025
13 mph W
Chance Light Rain
A chance of rain. Mostly cloudy, with a high near 48. West wind around 13 mph.

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