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Gray/Portland, ME Local Forecast Office

4NM E Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 39 °F
S 15kt⇓
1ft
Tonight
Low: 30 °F
SW 10kt
2-3ft
Thursday
High: 38 °F
W 10kt
1ft
Thursday Night
Low: 21 °F
Light Wind
1ft
Friday
High: 38 °F
SSW 10kt
1ft
Friday Night
Low: 29 °F
SSW 10kt
1ft
Saturday
High: 46 °F
SSW 10kt
1ft
Saturday Night
Low: 27 °F
SW 10kt
1ft
Sunday
High: 35 °F
WNW 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:39 am EST Feb 25, 2026
Forecast Valid: 10am EST Feb 25, 2026-6pm EST Mar 3, 2026

View Nearby Observations

Detailed Forecast

Today

S wind 12 to 15 kt becoming SW 10 to 13 kt in the afternoon. Winds could gust as high as 20 kt. Snow, possibly mixing with rain after 1pm, then gradually ending. Seas around 1 ft.

Tonight

SW wind around 10 kt. Scattered showers between midnight and 2am. Seas 2 to 3 ft.

Thursday

W wind around 10 kt. Increasing clouds. Seas around 1 ft.

Thursday Night

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

Friday

NW wind 5 to 10 kt becoming SSW in the afternoon. Sunny. Seas around 1 ft.

Friday Night

SSW wind around 10 kt. Mostly clear. Seas around 1 ft.

Saturday

SSW wind around 10 kt. Mostly sunny. Seas around 1 ft.

Saturday Night

SW wind around 10 kt becoming WNW after midnight. Partly cloudy. Seas around 1 ft.

Sunday

WNW wind around 10 kt. Partly sunny. 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.