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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]

Sunday
High: 59 °F
⇑S 10kt
1ft
Sunday Night
Low: 54 °F
Light Wind
1ft
Columbus Day
High: 62 °F
NNE 10kt⇓
1-2ft
Monday Night
Low: 53 °F
⇑NE 15kt
2ft
Tuesday
High: 60 °F
E 10kt
2ft
Tuesday Night
Low: 57 °F
S 15kt
2-3ft
Wednesday
High: 63 °F
WSW 15kt
2-3ft
Wednesday Night
Low: 51 °F
NW 10kt
1-2ft
Thursday
High: 57 °F
NW 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:45 am EDT Oct 11, 2026
Forecast Valid: 4am EDT Oct 11, 2026-6pm EDT Oct 17, 2026

View Nearby Observations

Detailed Forecast

Sunday

SW wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. Increasing clouds. Seas around 1 ft.

Sunday Night

Variable winds 5 kt or less. Showers, mainly before 5am. Areas of fog after 2am. Seas around 1 ft.

Columbus Day

NNE wind 5 to 10 kt becoming variable and less than 5 kt in the afternoon. A chance of showers, mainly before 8am. Areas of fog before 8am. Seas 1 to 2 ft.

Monday Night

N wind 5 to 8 kt becoming NE 10 to 15 kt in the evening. Winds could gust as high as 25 kt. Increasing clouds. Seas around 2 ft.

Tuesday

E wind around 10 kt becoming SSE in the afternoon. Rain likely, mainly after 4pm. Seas around 2 ft.

Tuesday Night

S wind around 15 kt becoming SSW after midnight. Rain. Seas 2 to 3 ft.

Wednesday

WSW wind 10 to 15 kt becoming WNW in the afternoon. Showers likely before 8am. Seas 2 to 3 ft.

Wednesday Night

NW wind around 10 kt. Partly cloudy. Seas 1 to 2 ft.

Thursday

NW wind 5 to 10 kt. Sunny. 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.