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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 33 °F
NNE 15kt⇓
< 1ft
Tonight
Low: 25 °F
N 10kt
< 1ft
Sunday
High: 36 °F
ENE 10kt
< 1ft
Sunday Night
Low: 28 °F
⇑ENE 25kt
< 1ft
Monday
High: 33 °F
N 30kt
< 1ft
Monday Night
Low: 24 °F
N 25kt⇓
< 1ft
Tuesday
High: 33 °F
WNW 15kt
< 1ft
Tuesday Night
Low: 16 °F
W 10kt
< 1ft
Wednesday
High: 35 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:58 am EST Feb 21, 2026
Forecast Valid: 8am EST Feb 21, 2026-6pm EST Feb 27, 2026

View Nearby Observations

Detailed Forecast

Today

NNE wind 10 to 15 kt decreasing to 5 to 10 kt in the afternoon. Winds could gust as high as 25 kt. A chance of snow, mainly before 9am. Seas 1 ft or less.

Tonight

N wind 5 to 10 kt. Partly cloudy. Seas 1 ft or less.

Sunday

NNE wind around 10 kt becoming ENE in the afternoon. Winds could gust as high as 20 kt. A slight chance of snow after 4pm. Seas 1 ft or less.

Sunday Night

ENE wind 15 to 20 kt increasing to 20 to 25 kt after midnight. Winds could gust as high as 40 kt. Snow likely, mainly after 2am. Seas 1 ft or less.

Monday

N wind 25 to 30 kt, with gusts as high as 45 kt. Snow. Seas 1 ft or less.

Monday Night

N wind 20 to 25 kt becoming NW 15 to 20 kt after midnight. Winds could gust as high as 40 kt. Snow likely before 11pm. Seas 1 ft or less.

Tuesday

WNW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 1 ft or less.

Tuesday Night

W wind 5 to 10 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

Variable winds 5 kt or less. A chance of snow. Seas 1 ft or less.

*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.