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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 39 °F
NW 20kt⇓
2-3ft
Tonight
Low: 31 °F
NW 10kt⇓
1-2ft
Tuesday
High: 40 °F
⇑ENE 15kt
1ft
Tuesday Night
Low: 33 °F
NNE 25kt
2-3ft
Wednesday
High: 37 °F
NW 20kt⇓
2-3ft
Wednesday Night
Low: 34 °F
⇑SW 15kt
2-3ft
Thursday
High: 38 °F
⇑WNW 25kt
3ft
Thursday Night
Low: 18 °F
WNW 25kt⇓
3ft
Friday
High: 29 °F
WNW 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:51 am EST Dec 1, 2025
Forecast Valid: 11am EST Dec 1, 2025-6pm EST Dec 7, 2025

View Nearby Observations

Detailed Forecast

Today

NW wind 17 to 20 kt decreasing to 15 to 18 kt in the afternoon. Winds could gust as high as 25 kt. Sunny. Seas 2 to 3 ft.

Tonight

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

Tuesday

S wind 5 to 8 kt becoming ENE 10 to 15 kt in the afternoon. Snow likely before 11am, then rain and snow likely between 11am and noon, then rain after noon. Seas around 1 ft.

Tuesday Night

NE wind 20 to 25 kt becoming NNW after midnight. Winds could gust as high as 35 kt. Rain, possibly mixing with snow after midnight, then gradually ending. Seas 2 to 3 ft.

Wednesday

NW wind 15 to 20 kt becoming W 5 to 8 kt in the afternoon. Mostly 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 20 kt becoming WNW 20 to 25 kt in the afternoon. Winds could gust as high as 30 kt. Mostly cloudy. Seas around 3 ft.

Thursday Night

WNW wind 20 to 25 kt decreasing to 15 to 20 kt after midnight. Winds could gust as high as 30 kt. Mostly clear. Seas around 3 ft.

Friday

WNW wind 10 to 15 kt becoming WSW in the afternoon. Mostly sunny. Seas around 2 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.