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Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]

This Afternoon
High: 66 °F
SSE 10kt
3ft
Tonight
Low: 62 °F
S 10kt
3-4ft
Tuesday
High: 70 °F
S 15kt
3-4ft
Tuesday Night
Low: 66 °F
SW 15kt
3-4ft
Wednesday
High: 72 °F
SSW 10kt
3ft
Wednesday Night
Low: 65 °F
SSW 10kt
3ft
Thursday
High: 72 °F
S 10kt
2-3ft
Thursday Night
Low: 63 °F
WSW 10kt
2ft
Independence Day
High: 71 °F
WNW 10kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:57 pm EDT Jun 30, 2025
Forecast Valid: 3pm EDT Jun 30, 2025-6pm EDT Jul 7, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

SSE wind around 10 kt. Mostly sunny. Seas around 3 ft.

Tonight

S wind around 10 kt. Patchy fog after 9pm. Seas 3 to 4 ft.

Tuesday

S wind 10 to 15 kt. Scattered showers, with thunderstorms also possible after 11am. Some of the storms could be severe. Patchy fog before 3pm. Seas 3 to 4 ft.

Tuesday Night

SW wind 10 to 15 kt. Scattered showers and thunderstorms before 11pm. Some of the storms could be severe. Seas 3 to 4 ft.

Wednesday

SSW wind around 10 kt. Mostly cloudy. Seas around 3 ft.

Wednesday Night

SSW wind 5 to 10 kt becoming W after midnight. Partly cloudy. Seas around 3 ft.

Thursday

W wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas 2 to 3 ft.

Thursday Night

WSW wind around 10 kt becoming WNW after midnight. Partly cloudy. Seas around 2 ft.

Independence Day

WNW wind 5 to 10 kt becoming WSW in the afternoon. Sunny. Seas around 2 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.