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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

This Afternoon
High: 34 °F
ENE 10kt
3ft
Tonight
Low: 27 °F
⇑ENE 30kt
5ft
Monday
High: 32 °F
NNE 35kt⇓
9ft
Monday Night
Low: 23 °F
N 25kt⇓
9-10ft
Tuesday
High: 30 °F
WNW 15kt
10ft
Tuesday Night
Low: 17 °F
WNW 10kt
7ft
Wednesday
High: 36 °F
S 10kt
3-4ft
Wednesday Night
Low: 28 °F
WSW 10kt
2-3ft
Thursday
High: 38 °F
W 10kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:23 pm EST Feb 22, 2026
Forecast Valid: 3pm EST Feb 22, 2026-6pm EST Mar 1, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

ENE wind around 10 kt. Cloudy. Seas around 3 ft.

Tonight

ENE wind 15 to 20 kt increasing to 25 to 30 kt. Winds could gust as high as 40 kt. Snow, mainly after 1am. Seas 3 ft building to 5 ft.

Monday

NNE wind 30 to 35 kt becoming N 25 to 30 kt in the afternoon. Winds could gust as high as 45 kt. Snow. The snow could be heavy at times. Seas 7 ft building to 9 ft.

Monday Night

N wind 20 to 25 kt becoming NW 15 to 20 kt after midnight. Winds could gust as high as 30 kt. Snow likely before 11pm. Seas 9 to 10 ft.

Tuesday

WNW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 10 ft subsiding to 8 ft.

Tuesday Night

WNW wind 5 to 10 kt becoming WSW after midnight. Partly cloudy. Seas 7 ft subsiding to 5 ft.

Wednesday

SW wind 5 to 10 kt becoming S in the morning. Snow, mainly before 5pm. Seas 3 to 4 ft.

Wednesday Night

WSW wind 5 to 10 kt. A chance of snow. Seas 2 to 3 ft.

Thursday

W wind 5 to 10 kt becoming SW in the afternoon. A chance of snow after 2pm, mixing with rain after 4pm. Seas 1 to 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.