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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 20 °F
⇑ENE 20kt
6ft
Monday
High: 24 °F
NE 20kt
7-8ft
Monday Night
Low: 13 °F
WNW 15kt
7-8ft
Tuesday
High: 22 °F
WNW 15kt
5-6ft
Tuesday Night
Low: 11 °F
W 10kt
3-4ft
Wednesday
High: 23 °F
WNW 10kt
2-3ft
Wednesday Night
Low: 11 °F
W 10kt
1-2ft
Thursday
High: 21 °F
NNW 10kt
1ft
Thursday Night
Low: 7 °F
WNW 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:33 pm EST Jan 25, 2026
Forecast Valid: 7pm EST Jan 25, 2026-6pm EST Feb 1, 2026

View Nearby Observations

Detailed Forecast

Tonight

E wind 15 to 18 kt becoming ENE 17 to 20 kt after midnight. Winds could gust as high as 25 kt. Snow. The snow could be heavy at times. Widespread freezing spray between 10pm and 11pm. 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 between 8am and 1pm. Seas 7 to 8 ft.

Monday Night

NNW wind 10 to 15 kt becoming WNW after midnight. Winds could gust as high as 20 kt. Snow likely, mainly before 1am. Widespread freezing spray. Seas 7 to 8 ft.

Tuesday

WNW wind 10 to 15 kt becoming WSW in the afternoon. Widespread freezing spray before 2pm. Increasing clouds. Seas 5 to 6 ft.

Tuesday Night

WSW wind around 10 kt becoming WNW after midnight. Widespread freezing spray after 8pm. Mostly cloudy. Seas 3 to 4 ft.

Wednesday

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

Wednesday Night

W wind 5 to 10 kt. Mostly cloudy. Seas 1 to 2 ft.

Thursday

NNW wind around 10 kt. Partly sunny. Seas around 1 ft.

Thursday Night

WNW wind around 10 kt. Partly cloudy. 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.