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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 6 °F
WNW 25kt
3ft
Saturday
High: 14 °F
WNW 20kt
2-3ft
Saturday Night
Low: 8 °F
WNW 15kt⇓
2ft
Sunday
High: 29 °F
ENE 10kt
1ft
Sunday Night
Low: 22 °F
⇑ENE 30kt
4ft
Monday
High: 27 °F
NE 30kt
4-5ft
Monday Night
Low: 16 °F
NW 25kt
4-5ft
Tuesday
High: 23 °F
W 20kt
3-4ft
Tuesday Night
Low: 15 °F
W 20kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:33 pm EST Jan 23, 2026
Forecast Valid: 8pm EST Jan 23, 2026-6pm EST Jan 30, 2026

View Nearby Observations

Detailed Forecast

Tonight

WNW wind around 25 kt, with gusts as high as 35 kt. Widespread freezing spray. Partly cloudy. Seas around 3 ft.

Saturday

WNW wind 15 to 20 kt, with gusts as high as 30 kt. Widespread freezing spray. Sunny. Seas 2 to 3 ft.

Saturday Night

WNW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 25 kt. Widespread freezing spray. Increasing clouds. Seas around 2 ft.

Sunday

NNW wind 5 to 10 kt becoming ENE in the afternoon. Snow, mainly after 2pm. The snow could be heavy at times. Widespread freezing spray before 3pm. Seas around 1 ft.

Sunday Night

ENE wind 20 to 25 kt increasing to 25 to 30 kt. Winds could gust as high as 40 kt. Snow. The snow could be heavy at times. Widespread freezing spray before 11pm. Seas 2 ft building to 4 ft.

Monday

NE wind 25 to 30 kt becoming N in the afternoon. Winds could gust as high as 40 kt. Snow. Widespread freezing spray. Seas 4 to 5 ft.

Monday Night

NNW wind 20 to 25 kt becoming WNW after midnight. Winds could gust as high as 35 kt. Snow likely, mainly before 7pm. Widespread freezing spray. Seas 4 to 5 ft.

Tuesday

W wind around 20 kt, with gusts as high as 30 kt. Widespread freezing spray. Mostly sunny. Seas 3 to 4 ft.

Tuesday Night

W wind 15 to 20 kt. Widespread freezing spray. Partly cloudy. Seas around 3 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.