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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Overnight
Low: 7 °F
NW 10kt
1ft
Sunday
High: 24 °F
⇑ENE 10kt
1ft
Sunday Night
Low: 21 °F
⇑E 20kt
6ft
Monday
High: 25 °F
NE 20kt
7-8ft
Monday Night
Low: 13 °F
WNW 15kt
7-8ft
Tuesday
High: 22 °F
WNW 15kt
7ft
Tuesday Night
Low: 11 °F
WNW 10kt
3-4ft
Wednesday
High: 22 °F
WNW 10kt
2-3ft
Wednesday Night
Low: 7 °F
WNW 10kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:32 pm EST Jan 24, 2026
Forecast Valid: 11pm EST Jan 24, 2026-6pm EST Jan 31, 2026

View Nearby Observations

Detailed Forecast

Overnight

NW wind 5 to 10 kt. Widespread freezing spray. Mostly cloudy. Seas around 1 ft.

Sunday

N wind 5 to 8 kt becoming ENE 7 to 10 kt in the afternoon. Snow, mainly after 3pm. The snow could be heavy at times. Widespread freezing spray before noon. Seas around 1 ft.

Sunday Night

E wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Winds could gust as high as 30 kt. Snow. The snow could be heavy at times. Seas 2 ft building to 6 ft.

Monday

NE wind 15 to 20 kt becoming N in the afternoon. Winds could gust as high as 25 kt. Snow. Widespread freezing spray. Seas 7 to 8 ft.

Monday Night

NNW wind around 15 kt becoming WNW after midnight. Winds could gust as high as 25 kt. Snow likely before 3am. Widespread freezing spray. Seas 7 to 8 ft.

Tuesday

WNW wind 10 to 15 kt, with gusts as high as 20 kt. Widespread freezing spray before 3pm. Mostly sunny. Seas 7 ft subsiding to 5 ft.

Tuesday Night

WNW wind around 10 kt. Widespread freezing spray. Partly cloudy. Seas 3 to 4 ft.

Wednesday

WNW wind around 10 kt. Widespread freezing spray. Sunny. Seas 2 to 3 ft.

Wednesday Night

WNW wind around 10 kt. Widespread freezing spray. Partly cloudy. Seas 1 to 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.