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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 68 °F
Light Wind
1ft
Tonight
Low: 63 °F
Light Wind
1ft
Saturday
High: 83 °F
Light Wind
2ft
Saturday Night
Low: 63 °F
Light Wind
1-2ft
Sunday
High: 81 °F
⇑S 10kt
1-2ft
Sunday Night
Low: 61 °F
SSW 15kt
3ft
Monday
High: 76 °F
Light Wind
1-2ft
Monday Night
Low: 58 °F
Light Wind
1ft
Tuesday
High: 71 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:34 pm EDT Jun 12, 2026
Forecast Valid: 4pm EDT Jun 12, 2026-6pm EDT Jun 19, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Patchy fog after 8pm. Seas around 1 ft.

Saturday

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

Saturday Night

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

Sunday

SW wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. Partly sunny. Seas 1 to 2 ft.

Sunday Night

SSW wind 10 to 15 kt. Showers, mainly after 10pm. Seas around 3 ft.

Monday

Variable winds 5 kt or less. Showers, mainly before 8am. Seas 1 to 2 ft.

Monday Night

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

Tuesday

Variable winds 5 kt or less. Mostly sunny. 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.