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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 61 °F
Light Wind
1ft
Friday
High: 66 °F
Light Wind
1ft
Friday Night
Low: 59 °F
Light Wind
1ft
Saturday
High: 71 °F
Light Wind
1ft
Saturday Night
Low: 60 °F
Light Wind
1ft
Sunday
High: 69 °F
⇑SSE 15kt
1-2ft
Sunday Night
Low: 62 °F
SSW 20kt
3ft
Monday
High: 69 °F
W 10kt
1-2ft
Monday 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: 2:32 pm EDT Jun 11, 2026
Forecast Valid: 5pm EDT Jun 11, 2026-6pm EDT Jun 18, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. A slight chance of showers and thunderstorms between 7pm and 8pm. Patchy dense fog. Seas around 1 ft.

Friday

Variable winds 5 kt or less. A slight chance of showers before 9am. Areas of dense fog before 3pm. Seas around 1 ft.

Friday Night

Variable winds 5 kt or less. A slight chance of showers and thunderstorms between 10pm and midnight, then a chance of showers after midnight. Patchy dense fog after 7pm. Seas around 1 ft.

Saturday

Variable winds 5 kt or less. Patchy fog before 8am. Seas around 1 ft.

Saturday Night

Variable winds 5 kt or less. Mostly clear. Seas around 1 ft.

Sunday

SSE wind 5 to 10 kt increasing to 10 to 15 kt. Mostly sunny. Seas 1 to 2 ft.

Sunday Night

SSW wind 15 to 20 kt. Showers likely, mainly after 11pm. Seas around 3 ft.

Monday

W wind 5 to 10 kt. A chance of showers. Seas 1 to 2 ft.

Monday 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.