Your Ultimate Boating Resource

HomeForecastsMaine ForecastsYarmouth, ME Marine Weather

Yarmouth, ME Marine Weather Forecast

Station CASM1 - 8418150 - Portland, ME

December 28, 2025 12:48 pm EST
Location: 43.656N 70.246W
Wind Direction: W (260°)
Wind Speed: 5.1 knots
Wind Gust: 6.0 knots
Atmospheric Pressure: 29.99 in (1015.5 mb)
Water Temperature: 35.8°F (2.1°C)


This Afternoon - 35°F
Dec 28, 2025
5 mph SW
Mostly Sunny
Mostly sunny, with a high near 35. Southwest wind around 5 mph.
Tonight - 32°F
Dec 28, 2025
5 to 15 mph S
Mostly Cloudy then Rain And Snow
Rain between midnight and 3am, then rain and snow. Mostly cloudy. Low around 32, with temperatures rising to around 39 overnight. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Monday - 44°F
Dec 29, 2025
15 to 20 mph S
Rain
Rain. Cloudy, with a high near 44. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Monday Night - 22°F
Dec 29, 2025
20 to 30 mph SW
Slight Chance Light Snow
A chance of rain before 11pm, then a slight chance of snow between 11pm and 1am. Partly cloudy, with a low around 22. Southwest wind 20 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.
Tuesday - 26°F
Dec 30, 2025
25 mph W
Partly Sunny
Partly sunny, with a high near 26. West wind around 25 mph, with gusts as high as 40 mph.
Tuesday Night - 18°F
Dec 30, 2025
20 to 25 mph W
Mostly Cloudy
Mostly cloudy, with a low around 18.
Wednesday - 32°F
Dec 31, 2025
20 mph SW
Slight Chance Light Snow
A slight chance of snow after 11am. Mostly cloudy, with a high near 32.
Wednesday Night - 17°F
Dec 31, 2025
15 to 20 mph W
Chance Light Snow
A chance of snow. Mostly cloudy, with a low around 17. Chance of precipitation is 30%.
New Year's Day - 22°F
Jan 01, 2026
15 mph W
Slight Chance Light Snow
A slight chance of snow before 3pm. Mostly sunny, with a high near 22.
Thursday Night - 15°F
Jan 01, 2026
10 to 15 mph W
Slight Chance Light Snow
A slight chance of snow. Partly cloudy, with a low around 15.
Friday - 25°F
Jan 02, 2026
10 mph NW
Slight Chance Light Snow then Partly Sunny
A slight chance of snow before 7am. Partly sunny, with a high near 25.
Friday Night - 18°F
Jan 02, 2026
10 mph NW
Partly Cloudy
Partly cloudy, with a low around 18.
Saturday - 31°F
Jan 03, 2026
10 mph W
Mostly Sunny
Mostly sunny, with a high near 31.
Saturday Night - 20°F
Jan 03, 2026
10 mph W
Slight Chance Light Snow
A slight chance of snow after 7pm. Partly cloudy, with a low around 20.

Don't Miss