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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 48 °F
⇑S 25kt
4ft
Tonight
Low: 39 °F
SSW 20kt
5ft
Monday
High: 39 °F
W 20kt
2-3ft
Monday Night
Low: 31 °F
NW 10kt⇓
1-2ft
Tuesday
High: 42 °F
S 10kt
1ft
Tuesday Night
Low: 31 °F
⇑N 20kt
3ft
Wednesday
High: 37 °F
NNW 15kt⇓
2-3ft
Wednesday Night
Low: 35 °F
⇑SW 15kt
2-3ft
Thursday
High: 40 °F
⇑SW 20kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:02 am EST Nov 30, 2025
Forecast Valid: 10am EST Nov 30, 2025-6pm EST Dec 6, 2025

View Nearby Observations

Detailed Forecast

Today

S wind 15 to 20 kt increasing to 20 to 25 kt in the afternoon. Winds could gust as high as 30 kt. Rain, mainly after 2pm. Seas 1 ft building to 4 ft.

Tonight

SSW wind around 20 kt becoming W after midnight. Winds could gust as high as 30 kt. Rain, mainly before midnight. Seas 5 ft subsiding to 3 ft.

Monday

W wind 15 to 20 kt becoming NW in the afternoon. Winds could gust as high as 30 kt. Sunny. Seas 2 to 3 ft.

Monday Night

NW wind 7 to 10 kt becoming N 5 to 8 kt after midnight. Increasing clouds. Seas 1 to 2 ft.

Tuesday

SSW wind around 10 kt becoming ENE in the afternoon. A chance of snow before noon, then rain. Seas around 1 ft.

Tuesday Night

NNE wind 15 to 18 kt becoming N 17 to 20 kt after midnight. Winds could gust as high as 25 kt. Rain and snow likely before 2am, then a chance of snow between 2am and 3am. Seas 1 ft building to 3 ft.

Wednesday

NNW wind 12 to 15 kt becoming WNW 10 to 13 kt in the afternoon. Winds could gust as high as 25 kt. Sunny. Seas 2 to 3 ft.

Wednesday Night

SW wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 25 kt. Mostly cloudy. Seas 2 to 3 ft.

Thursday

SW wind 15 to 18 kt increasing to 17 to 20 kt in the afternoon. Winds could gust as high as 30 kt. Mostly cloudy. Seas around 3 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.