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Merrimac, MA Marine Weather Forecast

Tonight - 18°F
Dec 29, 2025
10 to 25 mph W
Partly Cloudy
Partly cloudy, with a low around 18. West wind 10 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Tuesday - 24°F
Dec 30, 2025
20 to 25 mph W
Partly Sunny
Partly sunny, with a high near 24. West wind 20 to 25 mph, with gusts as high as 40 mph.
Tuesday Night - 17°F
Dec 30, 2025
10 to 20 mph W
Partly Cloudy
Partly cloudy, with a low around 17. West wind 10 to 20 mph, with gusts as high as 35 mph.
Wednesday - 32°F
Dec 31, 2025
10 mph SW
Mostly Cloudy
Mostly cloudy, with a high near 32. Southwest wind around 10 mph, with gusts as high as 25 mph.
Wednesday Night - 17°F
Dec 31, 2025
5 mph SW
Chance Snow Showers
A chance of snow showers after 11pm. Mostly cloudy, with a low around 17. Southwest wind around 5 mph. Chance of precipitation is 40%. New snow accumulation of less than half an inch possible.
New Year's Day - 26°F
Jan 01, 2026
10 mph W
Chance Snow Showers then Mostly Sunny
A chance of snow showers before 11am. Mostly sunny, with a high near 26. Chance of precipitation is 30%. New snow accumulation of less than half an inch possible.
Thursday Night - 12°F
Jan 01, 2026
5 to 10 mph W
Mostly Clear
Mostly clear, with a low around 12.
Friday - 26°F
Jan 02, 2026
5 to 10 mph W
Mostly Sunny
Mostly sunny, with a high near 26.
Friday Night - 16°F
Jan 02, 2026
5 mph W
Mostly Clear
Mostly clear, with a low around 16.
Saturday - 30°F
Jan 03, 2026
5 to 10 mph W
Sunny
Sunny, with a high near 30.
Saturday Night - 13°F
Jan 03, 2026
5 mph NW
Partly Cloudy then Slight Chance Snow Showers
A slight chance of snow showers after 4am. Partly cloudy, with a low around 13.
Sunday - 27°F
Jan 04, 2026
5 mph NW
Slight Chance Snow Showers
A slight chance of snow showers before 2pm. Mostly sunny, with a high near 27.
Sunday Night - 14°F
Jan 04, 2026
5 mph W
Mostly Cloudy
Mostly cloudy, with a low around 14.
Monday - 30°F
Jan 05, 2026
5 to 10 mph W
Mostly Cloudy then Slight Chance Snow Showers
A slight chance of snow showers after 2pm. Mostly cloudy, with a high near 30.

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