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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 42 °F
S 15kt
2-3ft
Tonight
Low: 31 °F
SW 10kt
2ft
Sunday
High: 34 °F
NNW 15kt
1-2ft
Sunday Night
Low: 15 °F
NNW 20kt
2ft
Monday
High: 25 °F
NW 15kt⇓
1-2ft
Monday Night
Low: 20 °F
SW 10kt
1-2ft
Tuesday
High: 38 °F
SSW 20kt
2-3ft
Tuesday Night
Low: 36 °F
SSW 20kt
3-4ft
Wednesday
High: 43 °F
WNW 15kt⇓
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:02 am EST Feb 28, 2026
Forecast Valid: 10am EST Feb 28, 2026-6pm EST Mar 6, 2026

View Nearby Observations

Detailed Forecast

Today

S wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 2 to 3 ft.

Tonight

SW wind around 10 kt becoming NNE after midnight. A slight chance of snow after 5am. Seas around 2 ft.

Sunday

NNE wind 10 to 15 kt becoming NNW in the afternoon. Winds could gust as high as 20 kt. Snow likely, mainly between 7am and 5pm. Seas 1 to 2 ft.

Sunday Night

NNW wind 15 to 20 kt, with gusts as high as 30 kt. A chance of snow before 9pm. Widespread freezing spray after 11pm. Seas around 2 ft.

Monday

NW wind 12 to 15 kt decreasing to 10 to 13 kt in the afternoon. Widespread freezing spray before 1pm. Sunny. Seas 1 to 2 ft.

Monday Night

WNW wind around 10 kt becoming SW after midnight. Widespread freezing spray after 10pm. Mostly clear. Seas 1 to 2 ft.

Tuesday

SSW wind 15 to 20 kt, with gusts as high as 30 kt. A chance of rain and snow after 3pm. Widespread freezing spray before 9am. Seas 2 to 3 ft.

Tuesday Night

SSW wind around 20 kt becoming WSW after midnight. Winds could gust as high as 30 kt. Rain and snow, becoming all rain after 4am. Seas 3 to 4 ft.

Wednesday

WNW wind 12 to 15 kt decreasing to 10 to 13 kt in the afternoon. Winds could gust as high as 25 kt. Rain likely, possibly mixing with snow after 7am, then gradually ending. 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.