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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Overnight
Low: 12 °F
N 15kt
1ft
Sunday
High: 27 °F
N 20kt
1-2ft
Sunday Night
Low: 14 °F
NW 15kt⇓
3-4ft
Monday
High: 30 °F
WNW 10kt
5-6ft
Monday Night
Low: 13 °F
NW 10kt
5-6ft
Tuesday
High: 30 °F
Light Wind
5ft
Tuesday Night
Low: 16 °F
Light Wind
2-3ft
Wednesday
High: 31 °F
Light Wind
2ft
Wednesday Night
Low: 15 °F
NW 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:47 pm EST Jan 31, 2026
Forecast Valid: 12am EST Feb 1, 2026-6pm EST Feb 7, 2026

View Nearby Observations

Detailed Forecast

Overnight

N wind 10 to 15 kt. Widespread freezing spray. Mostly cloudy. Seas around 1 ft.

Sunday

N wind 15 to 20 kt. Widespread freezing spray before 3pm. Mostly cloudy. Seas 1 to 2 ft.

Sunday Night

NW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 25 kt. Widespread freezing spray after 9pm. Mostly cloudy. Seas 3 to 4 ft.

Monday

WNW wind 5 to 10 kt. Widespread freezing spray before 11am. Sunny. Seas 5 to 6 ft.

Monday Night

NW wind 5 to 10 kt. Mostly clear. Seas 5 to 6 ft.

Tuesday

Variable winds 5 kt or less. Widespread freezing spray before 8am. Sunny. Seas 5 ft subsiding to 3 ft.

Tuesday Night

Variable winds 5 kt or less. Partly cloudy. Seas 2 to 3 ft.

Wednesday

Variable winds 5 kt or less. Widespread freezing spray before 8am. Mostly sunny. Seas around 2 ft.

Wednesday Night

NW wind around 10 kt. Mostly clear. Seas around 1 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.