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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

This Afternoon
High: 38 °F
ESE 10kt
1ft
Tonight
Low: 26 °F
NNE 20kt
3ft
Saturday
High: 33 °F
NNE 20kt⇓
2ft
Saturday Night
Low: 29 °F
NNE 10kt
2ft
Sunday
High: 36 °F
NNE 15kt
2ft
Sunday Night
Low: 29 °F
⇑ENE 35kt
2-3ft
Monday
High: 33 °F
NNE 40kt
4-5ft
Monday Night
Low: 28 °F
N 35kt⇓
4-5ft
Tuesday
High: 33 °F
WNW 20kt
3-4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:04 pm EST Feb 20, 2026
Forecast Valid: 3pm EST Feb 20, 2026-6pm EST Feb 27, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

ESE wind around 10 kt. A chance of snow before 5pm, then rain and snow likely. Seas around 1 ft.

Tonight

E wind 15 to 20 kt becoming NNE after midnight. Winds could gust as high as 30 kt. Snow, possibly mixed with rain, becoming all snow after 7pm. Seas 1 ft building to 3 ft.

Saturday

NNE wind 15 to 20 kt decreasing to 10 to 15 kt. Winds could gust as high as 30 kt. A chance of snow, mainly before 8am. Seas around 2 ft.

Saturday Night

NNE wind around 10 kt. Mostly cloudy. Seas around 2 ft.

Sunday

NNE wind around 15 kt, with gusts as high as 25 kt. Mostly cloudy. Seas around 2 ft.

Sunday Night

ENE wind 20 to 25 kt increasing to 30 to 35 kt. Winds could gust as high as 45 kt. Snow likely, mainly after 3am. Seas 2 to 3 ft.

Monday

NNE wind 35 to 40 kt, with gusts as high as 55 kt. Snow likely. Seas 4 to 5 ft.

Monday Night

N wind 30 to 35 kt becoming NW 20 to 25 kt. Winds could gust as high as 45 kt. A chance of snow. Seas 4 to 5 ft.

Tuesday

WNW wind 15 to 20 kt. Mostly sunny. Seas 3 to 4 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.