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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 59 °F
S 10kt
1-2ft
Friday
High: 65 °F
SSE 10kt
1ft
Friday Night
Low: 59 °F
Light Wind
1ft
Saturday
High: 63 °F
Light Wind
1ft
Saturday Night
Low: 59 °F
Light Wind
1ft
Sunday
High: 64 °F
Light Wind
1ft
Sunday Night
Low: 60 °F
Light Wind
1ft
Monday
High: 68 °F
Light Wind
1ft
Monday Night
Low: 63 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:25 pm EDT Jun 25, 2026
Forecast Valid: 6pm EDT Jun 25, 2026-6pm EDT Jul 2, 2026

View Nearby Observations

Detailed Forecast

Tonight

S wind 5 to 10 kt. A chance of showers, mainly after 5am. Seas 1 to 2 ft.

Friday

SSE wind 5 to 10 kt. A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas around 1 ft.

Friday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Patchy fog after 11pm. Seas around 1 ft.

Saturday

Variable winds 5 kt or less. A chance of showers after 11am. Seas around 1 ft.

Saturday Night

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

Sunday

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

Sunday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

Monday

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

Monday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

Winds and seas higher in and near tstms.

*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.