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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

This Afternoon
High: 36 °F
ENE 20kt
2ft
Tonight
Low: 34 °F
ENE 20kt
2-3ft
Friday
High: 37 °F
NE 20kt
3ft
Friday Night
Low: 37 °F
ENE 15kt⇓
3ft
Saturday
High: 45 °F
⇑SSW 15kt
2-3ft
Saturday Night
Low: 45 °F
SW 20kt
4ft
Sunday
High: 49 °F
W 15kt
2-3ft
Sunday Night
Low: 40 °F
WSW 15kt
2ft
Monday
High: 51 °F
SSW 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:49 am EST Mar 5, 2026
Forecast Valid: 1pm EST Mar 5, 2026-6pm EDT Mar 11, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

ENE wind around 20 kt, with gusts as high as 30 kt. Cloudy. Seas around 2 ft.

Tonight

ENE wind around 20 kt. Rain, snow, and sleet before midnight, then snow, possibly mixed with sleet between midnight and 2am, then snow after 2am. Seas 2 to 3 ft.

Friday

NE wind 15 to 20 kt. Snow, possibly mixing with rain after 9am, then gradually ending. Patchy fog between 1pm and 4pm. Seas around 3 ft.

Friday Night

ENE wind 10 to 15 kt decreasing to 5 to 10 kt after midnight. Cloudy. Seas around 3 ft.

Saturday

SSW wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Cloudy. Seas 2 to 3 ft.

Saturday Night

SW wind 15 to 20 kt, with gusts as high as 30 kt. A chance of rain after 8pm. Seas around 4 ft.

Sunday

W wind 10 to 15 kt. Partly sunny. Seas 2 to 3 ft.

Sunday Night

WSW wind 10 to 15 kt. Mostly clear. Seas around 2 ft.

Monday

SSW wind around 15 kt. Sunny. Seas around 2 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.