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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

This Afternoon
High: 63 °F
SSW 10kt
3ft
Tonight
Low: 46 °F
WNW 15kt
2-3ft
Saturday
High: 49 °F
NW 10kt
2ft
Saturday Night
Low: 36 °F
NNW 10kt
1ft
Sunday
High: 51 °F
Light Wind
1ft
Sunday Night
Low: 42 °F
Light Wind
1ft
Monday
High: 54 °F
Light Wind
1-2ft
Monday Night
Low: 44 °F
Light Wind
5ft
Tuesday
High: 57 °F
NNE 10kt
6ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:18 pm EDT Oct 16, 2026
Forecast Valid: 2pm EDT Oct 16, 2026-6pm EDT Oct 22, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind around 10 kt. Showers likely, with thunderstorms also possible after 5pm. Patchy fog after 3pm. Seas around 3 ft.

Tonight

WSW wind 10 to 15 kt becoming WNW after midnight. Showers and thunderstorms likely before 9pm, then a chance of showers between 9pm and 11pm. Patchy fog before 7pm, then Patchy fog between 8pm and 9pm. Seas 2 to 3 ft.

Saturday

NW wind around 10 kt. Cloudy through mid morning, then gradual clearing. Seas around 2 ft.

Saturday Night

NNW wind 5 to 10 kt. Clear. Seas around 1 ft.

Sunday

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

Sunday Night

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

Monday

Variable winds 5 kt or less. Mostly sunny. Seas 1 to 2 ft.

Monday Night

Variable winds 5 kt or less. Mostly cloudy. Seas 3 ft building to 5 ft.

Tuesday

NNE wind 5 to 10 kt. Partly sunny. Seas around 6 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.