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Gray/Portland, ME Local Forecast Office

4NM E Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 31 °F
WNW 10kt
1ft
Thursday
High: 43 °F
Light Wind
1ft
Thursday Night
Low: 30 °F
Light Wind
1ft
Friday
High: 45 °F
⇑S 10kt
1ft
Friday Night
Low: 40 °F
SSW 15kt
1ft
Saturday
High: 44 °F
W 10kt
1ft
Saturday Night
Low: 39 °F
E 10kt
1ft
Sunday
High: 42 °F
W 10kt
1ft
Sunday Night
Low: 29 °F
W 15kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:57 pm EST Jan 7, 2026
Forecast Valid: 6pm EST Jan 7, 2026-6pm EST Jan 14, 2026

View Nearby Observations

Detailed Forecast

Tonight

WNW wind 5 to 10 kt. Patchy fog between 7pm and 3am. Patchy freezing fog between 3am and 4am. Seas around 1 ft.

Thursday

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

Thursday Night

Variable winds 5 kt or less. Patchy fog after midnight. Seas around 1 ft.

Friday

S wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. A chance of showers after 2pm. Patchy fog between 8am and 10am. Patchy freezing fog before 8am. Seas around 1 ft.

Friday Night

SSW wind 10 to 15 kt becoming WSW after midnight. Showers likely before 1am. Seas around 1 ft.

Saturday

W wind 5 to 10 kt becoming ENE in the afternoon. A chance of rain after 1pm. Seas around 1 ft.

Saturday Night

E wind around 10 kt becoming NNE after midnight. Rain. Seas around 1 ft.

Sunday

N wind around 10 kt becoming W in the afternoon. A chance of rain. Seas around 1 ft.

Sunday Night

W wind 10 to 15 kt, with gusts as high as 20 kt. Mostly 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.