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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 67 °F
SSW 15kt
3ft
Saturday
High: 73 °F
⇑S 20kt
2-3ft
Saturday Night
Low: 61 °F
WSW 15kt⇓
2-3ft
Sunday
High: 64 °F
N 10kt
1ft
Sunday Night
Low: 58 °F
W 10kt
1ft
Monday
High: 67 °F
WNW 10kt
1-2ft
Monday Night
Low: 57 °F
N 10kt
1ft
Tuesday
High: 64 °F
Light Wind
1ft
Tuesday Night
Low: 58 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:56 pm EDT Sep 5, 2025
Forecast Valid: 7pm EDT Sep 5, 2025-6pm EDT Sep 12, 2025

View Nearby Observations

Detailed Forecast

Tonight

SSW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly clear. Seas around 3 ft.

Saturday

S wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Winds could gust as high as 25 kt. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Patchy fog before 10am. Seas 2 to 3 ft.

Saturday Night

WSW wind 12 to 15 kt becoming W 10 to 13 kt after midnight. Winds could gust as high as 20 kt. Showers and possibly a thunderstorm. Seas 2 to 3 ft.

Sunday

N wind 5 to 10 kt becoming NW in the afternoon. Showers likely, mainly before noon. Seas around 1 ft.

Sunday Night

SW wind 5 to 10 kt becoming W after midnight. Mostly cloudy. Seas around 1 ft.

Monday

WNW wind 5 to 10 kt becoming SSW in the afternoon. Sunny. Seas 1 to 2 ft.

Monday Night

SW wind 5 to 10 kt becoming N after midnight. Mostly clear. Seas around 1 ft.

Tuesday

Variable winds 5 kt or less. Sunny. Seas around 1 ft.

Tuesday Night

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