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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 74 °F
Light Wind
< 1ft
Tonight
Low: 57 °F
Light Wind
< 1ft
Saturday
High: 70 °F
Light Wind
< 1ft
Saturday Night
Low: 60 °F
WSW 10kt
< 1ft
Sunday
High: 69 °F
NNW 10kt
< 1ft
Sunday Night
Low: 54 °F
N 10kt
< 1ft
Monday
High: 64 °F
N 10kt
< 1ft
Monday Night
Low: 56 °F
Light Wind
< 1ft
Tuesday
High: 76 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:39 am EDT Jun 5, 2026
Forecast Valid: 5am EDT Jun 5, 2026-6pm EDT Jun 11, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds 5 kt or less. Partly sunny. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.

Saturday

Variable winds 5 kt or less. A slight chance of showers between 3pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Seas 1 ft or less.

Saturday Night

WSW wind 5 to 10 kt. A chance of showers before 1am. Seas 1 ft or less.

Sunday

W wind around 10 kt becoming NNW in the afternoon. Showers likely, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.

Sunday Night

N wind around 10 kt, with gusts as high as 20 kt. Showers likely before 8pm. Seas 1 ft or less.

Monday

N wind 5 to 10 kt becoming ESE in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas 1 ft or less.

Monday Night

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

Tuesday

Variable winds 5 kt or less. Sunny. 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.