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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

This Afternoon
High: 16 °F
WNW 20kt
2ft
Tonight
Low: 8 °F
WNW 20kt⇓
1-2ft
Saturday
High: 22 °F
WNW 10kt⇓
1ft
Saturday Night
Low: 16 °F
⇑NNE 20kt
1-2ft
Sunday
High: 27 °F
⇑N 35kt
2-3ft
Sunday Night
Low: 20 °F
N 35kt⇓
4ft
Monday
High: 32 °F
NW 20kt⇓
3-4ft
Monday Night
Low: 21 °F
NW 15kt
3ft
Tuesday
High: 33 °F
WNW 10kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:12 am EST Jan 30, 2026
Forecast Valid: 12pm EST Jan 30, 2026-6pm EST Feb 5, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

WNW wind around 20 kt, with gusts as high as 25 kt. Widespread freezing spray. Mostly sunny. Seas around 2 ft.

Tonight

WNW wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. Widespread freezing spray. Partly cloudy. Seas 1 to 2 ft.

Saturday

WNW wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Widespread freezing spray before noon. Mostly sunny. Seas around 1 ft.

Saturday Night

NNW wind 5 to 8 kt becoming NNE 15 to 20 kt. Winds could gust as high as 30 kt. Widespread freezing spray after 8pm. Mostly cloudy. Seas 1 to 2 ft.

Sunday

N wind 25 to 30 kt increasing to 30 to 35 kt in the afternoon. Winds could gust as high as 40 kt. A chance of snow after 2pm. Widespread freezing spray before 4pm. Seas 2 to 3 ft.

Sunday Night

N wind 30 to 35 kt becoming NW 25 to 30 kt after midnight. Winds could gust as high as 40 kt. A chance of snow before 8pm. Widespread freezing spray after 8pm. Seas around 4 ft.

Monday

NW wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Widespread freezing spray before 11am. Mostly sunny. Seas 3 to 4 ft.

Monday Night

NW wind 10 to 15 kt. Mostly clear. Seas around 3 ft.

Tuesday

WNW wind 5 to 10 kt. Mostly sunny. 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.