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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 36 °F
⇑SSE 15kt
1-2ft
Monday
High: 45 °F
SSE 15kt
3ft
Monday Night
Low: 25 °F
⇑W 30kt
3-4ft
Tuesday
High: 27 °F
W 25kt
4ft
Tuesday Night
Low: 23 °F
W 20kt
3ft
Wednesday
High: 34 °F
WSW 20kt
2-3ft
Wednesday Night
Low: 21 °F
SW 20kt
2-3ft
New Year's Day
High: 25 °F
W 15kt
2ft
Thursday Night
Low: 20 °F
WNW 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:15 pm EST Dec 28, 2025
Forecast Valid: 8pm EST Dec 28, 2025-6pm EST Jan 4, 2026

View Nearby Observations

Detailed Forecast

Tonight

SW wind 10 to 13 kt becoming SSE 12 to 15 kt after midnight. Winds could gust as high as 20 kt. Rain, mainly after midnight. Seas 1 to 2 ft.

Monday

SSE wind around 15 kt becoming SSW in the afternoon. Winds could gust as high as 25 kt. Rain, mainly before 5pm. Seas around 3 ft.

Monday Night

W wind 20 to 25 kt increasing to 25 to 30 kt after midnight. Winds could gust as high as 40 kt. A slight chance of rain before 10pm, then a slight chance of snow between 10pm and 11pm. Seas 3 to 4 ft.

Tuesday

W wind around 25 kt, with gusts as high as 35 kt. Partly sunny. Seas around 4 ft.

Tuesday Night

W wind around 20 kt, with gusts as high as 30 kt. Mostly cloudy. Seas around 3 ft.

Wednesday

WSW wind around 20 kt, with gusts as high as 25 kt. Mostly cloudy. Seas 2 to 3 ft.

Wednesday Night

SW wind 15 to 20 kt becoming W after midnight. Mostly cloudy. Seas 2 to 3 ft.

New Year's Day

W wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 2 ft.

Thursday Night

WNW wind 10 to 15 kt. Partly cloudy. 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.