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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 39 °F
SSW 10kt
1-2ft
Sunday
High: 52 °F
⇑W 20kt
2ft
Sunday Night
Low: 34 °F
W 15kt
1-2ft
Monday
High: 41 °F
WNW 20kt
1-2ft
Monday Night
Low: 35 °F
W 15kt
1ft
Tuesday
High: 44 °F
W 15kt
1ft
Tuesday Night
Low: 34 °F
W 10kt
1ft
Wednesday
High: 44 °F
Light Wind
1ft
Wednesday Night
Low: 32 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:55 pm EST Nov 15, 2025
Forecast Valid: 6pm EST Nov 15, 2025-6pm EST Nov 22, 2025

View Nearby Observations

Detailed Forecast

Tonight

WSW wind 5 to 10 kt becoming S after midnight. Rain, mainly before 4am. Seas 1 to 2 ft.

Sunday

W wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Winds could gust as high as 25 kt. Isolated showers, mainly between 2pm and 4pm. Seas around 2 ft.

Sunday Night

W wind around 15 kt, with gusts as high as 30 kt. Mostly cloudy. Seas 1 to 2 ft.

Monday

WNW wind 15 to 20 kt, with gusts as high as 30 kt. Mostly sunny. Seas 1 to 2 ft.

Monday Night

W wind around 15 kt, with gusts as high as 25 kt. Mostly clear. Seas around 1 ft.

Tuesday

W wind around 15 kt, with gusts as high as 20 kt. Sunny. Seas around 1 ft.

Tuesday Night

W wind around 10 kt. Mostly clear. Seas around 1 ft.

Wednesday

Variable winds 5 kt or less. Sunny. Seas around 1 ft.

Wednesday Night

Variable winds 5 kt or less. 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.