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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 57 °F
Light Wind
2ft
Saturday
High: 68 °F
Light Wind
2ft
Saturday Night
Low: 61 °F
WSW 10kt
2-3ft
Sunday
High: 76 °F
Light Wind
2ft
Sunday Night
Low: 56 °F
N 10kt
2ft
Monday
High: 68 °F
N 10kt
2ft
Monday Night
Low: 57 °F
Light Wind
2ft
Tuesday
High: 74 °F
Light Wind
2ft
Tuesday Night
Low: 60 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:29 pm EDT Jun 5, 2026
Forecast Valid: 8pm EDT Jun 5, 2026-6pm EDT Jun 12, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

Saturday

Variable winds 5 kt or less. A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Seas around 2 ft.

Saturday Night

ESE wind 5 to 10 kt becoming NNW in the evening. A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Seas 2 to 3 ft.

Sunday

Variable winds 5 kt or less. Showers, mainly after 2pm. Seas around 2 ft.

Sunday Night

N wind around 10 kt. Showers likely before 8pm. Seas around 2 ft.

Monday

N wind 5 to 10 kt becoming SSE in the afternoon. Sunny. Seas around 2 ft.

Monday Night

Variable winds 5 kt or less. Mostly clear. Seas around 2 ft.

Tuesday

Variable winds 5 kt or less. Sunny. Seas around 2 ft.

Tuesday Night

Variable winds 5 kt or less. 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.