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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 24 °F
⇑W 15kt
2ft
Friday
High: 30 °F
⇑W 20kt
2ft
Friday Night
Low: 5 °F
WNW 20kt
2ft
Saturday
High: 14 °F
WNW 15kt
2ft
Saturday Night
Low: 6 °F
WNW 10kt
1ft
Sunday
High: 24 °F
NE 10kt
1ft
Sunday Night
Low: 18 °F
⇑ENE 20kt
2-3ft
Monday
High: 23 °F
N 15kt
3-4ft
Monday Night
Low: 12 °F
N 15kt
5-6ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:49 pm EST Jan 22, 2026
Forecast Valid: 9pm EST Jan 22, 2026-6pm EST Jan 29, 2026

View Nearby Observations

Detailed Forecast

Tonight

W wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 25 kt. Increasing clouds. Seas around 2 ft.

Friday

W wind 15 to 18 kt increasing to 17 to 20 kt in the afternoon. Winds could gust as high as 30 kt. Mostly sunny. Seas around 2 ft.

Friday Night

WNW wind 15 to 20 kt, with gusts as high as 30 kt. Widespread freezing spray. Partly cloudy. Seas around 2 ft.

Saturday

WNW wind 10 to 15 kt, with gusts as high as 20 kt. Widespread freezing spray. Sunny. Seas around 2 ft.

Saturday Night

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

Sunday

NNW wind 5 to 10 kt becoming NE in the afternoon. Snow likely, mainly after 4pm. The snow could be heavy at times. Widespread freezing spray. Seas around 1 ft.

Sunday Night

ENE wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Winds could gust as high as 25 kt. Snow. The snow could be heavy at times. Widespread freezing spray. Seas 2 to 3 ft.

Monday

N wind around 15 kt, with gusts as high as 25 kt. Snow. Widespread freezing spray. Seas 3 to 4 ft.

Monday Night

N wind around 15 kt becoming NW after midnight. Winds could gust as high as 25 kt. A chance of snow. Seas 5 to 6 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.