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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 20 °F
⇑NNE 15kt
2ft
Saturday
High: 28 °F
NNE 15kt⇓
2ft
Saturday Night
Low: 20 °F
NNW 10kt
1-2ft
Sunday
High: 37 °F
WNW 10kt
1ft
Sunday Night
Low: 34 °F
SSW 10kt
1-2ft
Monday
High: 42 °F
SSW 15kt
2ft
Monday Night
Low: 29 °F
⇑W 25kt
4ft
Tuesday
High: 31 °F
⇑W 30kt
4ft
Tuesday Night
Low: 25 °F
W 25kt
3-4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:30 pm EST Dec 26, 2025
Forecast Valid: 8pm EST Dec 26, 2025-6pm EST Jan 2, 2026

View Nearby Observations

Detailed Forecast

Tonight

NNE wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 20 kt. Snow. Widespread freezing spray after 4am. Seas around 2 ft.

Saturday

NNE wind 12 to 15 kt becoming NNW 10 to 13 kt in the afternoon. Winds could gust as high as 20 kt. Snow likely, mainly before 7am. Widespread freezing spray before noon. Seas around 2 ft.

Saturday Night

NNW wind around 10 kt becoming WNW after midnight. Mostly clear. Seas 1 to 2 ft.

Sunday

WNW wind 5 to 10 kt becoming W in the afternoon. Mostly sunny. Seas around 1 ft.

Sunday Night

WSW wind 5 to 10 kt becoming SSW after midnight. Rain likely, mainly after 3am. Seas 1 to 2 ft.

Monday

SSE wind around 15 kt becoming SSW in the afternoon. Winds could gust as high as 20 kt. Rain. Seas around 2 ft.

Monday Night

SW wind 15 to 20 kt becoming W 20 to 25 kt after midnight. Winds could gust as high as 35 kt. Rain likely before 9pm. Seas 2 ft building to 4 ft.

Tuesday

W wind 25 to 28 kt increasing to 27 to 30 kt in the afternoon. Winds could gust as high as 40 kt. Partly sunny. Seas around 4 ft.

Tuesday Night

W wind around 25 kt, with gusts as high as 35 kt. Mostly cloudy. Seas 3 to 4 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.