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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 70 °F
Light Wind
< 1ft
Tonight
Low: 60 °F
Light Wind
< 1ft
Saturday
High: 78 °F
WNW 10kt
< 1ft
Saturday Night
Low: 61 °F
Light Wind
< 1ft
Sunday
High: 75 °F
⇑SSE 15kt
< 1ft
Sunday Night
Low: 60 °F
SSW 15kt
< 1ft
Monday
High: 72 °F
W 10kt
< 1ft
Monday Night
Low: 58 °F
Light Wind
< 1ft
Tuesday
High: 69 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:55 am EDT Jun 12, 2026
Forecast Valid: 10am EDT Jun 12, 2026-6pm EDT Jun 18, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds 5 kt or less. A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 5pm. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 1am. Patchy fog. Seas 1 ft or less.

Saturday

WNW wind 5 to 10 kt. Partly sunny, then gradually becoming sunny. Seas 1 ft or less.

Saturday Night

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

Sunday

Variable winds less than 5 kt becoming SSE 10 to 15 kt in the morning. Winds could gust as high as 25 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

SSW wind 10 to 15 kt, with gusts as high as 30 kt. Showers, mainly after 11pm. Seas 1 ft or less.

Monday

W wind 5 to 10 kt. Showers likely before 8am. 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. Mostly sunny. Seas 1 ft or less.

Winds and seas higher in and near tstms.

*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.