For More Weather Information:

Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 40 °F
Light Wind
2ft
Thursday
High: 45 °F
SSW 15kt
2-3ft
Thursday Night
Low: 19 °F
W 15kt
3ft
Friday
High: 31 °F
W 15kt
2ft
Friday Night
Low: 28 °F
SW 10kt
2ft
Saturday
High: 40 °F
SSW 10kt
2ft
Saturday Night
Low: 31 °F
SW 10kt
2ft
Sunday
High: 36 °F
WSW 10kt
2ft
Sunday Night
Low: 24 °F
WNW 10kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:17 pm EST Jan 14, 2026
Forecast Valid: 8pm EST Jan 14, 2026-6pm EST Jan 21, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. A chance of showers. Areas of fog. Seas around 2 ft.

Thursday

SSW wind 10 to 15 kt, with gusts as high as 20 kt. A slight chance of showers before 9am. Areas of fog before 1pm. Seas 2 to 3 ft.

Thursday Night

SW wind around 15 kt becoming W after midnight. Winds could gust as high as 25 kt. Widespread freezing spray after 3am. Partly cloudy. Seas around 3 ft.

Friday

W wind 10 to 15 kt, with gusts as high as 25 kt. Widespread freezing spray before 11am. Sunny. Seas around 2 ft.

Friday Night

WSW wind around 10 kt becoming SSW after midnight. Mostly cloudy. Seas around 2 ft.

Saturday

SSW wind around 10 kt. A chance of snow showers before noon, then a chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Seas around 2 ft.

Saturday Night

SW wind around 10 kt. A chance of rain showers, mixing with snow after 9pm, then gradually ending. Seas around 2 ft.

Sunday

WSW wind 5 to 10 kt. Mostly cloudy. Seas around 2 ft.

Sunday Night

WNW wind around 10 kt. Mostly cloudy. Seas around 2 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.