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Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 30 °F
⇑N 15kt
3-4ft
M.L.King Day
High: 34 °F
⇑WSW 20kt
3-4ft
Monday Night
Low: 23 °F
W 25kt
7ft
Tuesday
High: 25 °F
W 25kt
5-6ft
Tuesday Night
Low: 19 °F
W 25kt
4-5ft
Wednesday
High: 35 °F
W 15kt
3-4ft
Wednesday Night
Low: 31 °F
SSW 20kt
5-6ft
Thursday
High: 40 °F
SW 20kt
5-6ft
Thursday Night
Low: 24 °F
W 25kt
5ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:03 pm EST Jan 18, 2026
Forecast Valid: 8pm EST Jan 18, 2026-6pm EST Jan 25, 2026

View Nearby Observations

Detailed Forecast

Tonight

N wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 25 kt. Snow. Seas 3 to 4 ft.

M.L.King Day

N wind 10 to 15 kt becoming WSW 15 to 20 kt in the afternoon. Winds could gust as high as 25 kt. Snow likely, mainly before 1pm. Seas 3 to 4 ft.

Monday Night

W wind around 25 kt, with gusts as high as 35 kt. Widespread freezing spray after 4am. Mostly cloudy, then gradually becoming mostly clear. Seas 5 ft building to 7 ft.

Tuesday

W wind 20 to 25 kt, with gusts as high as 35 kt. Widespread freezing spray. Mostly sunny. Seas 5 to 6 ft.

Tuesday Night

W wind 20 to 25 kt, with gusts as high as 30 kt. Widespread freezing spray. Partly cloudy. Seas 4 to 5 ft.

Wednesday

W wind around 15 kt becoming SW in the afternoon. Winds could gust as high as 25 kt. Widespread freezing spray before noon. Mostly sunny. Seas 3 to 4 ft.

Wednesday Night

SSW wind around 20 kt, with gusts as high as 30 kt. A chance of snow between 9pm and 3am, then a chance of rain after 3am. Seas 5 to 6 ft.

Thursday

SW wind around 20 kt, with gusts as high as 30 kt. A chance of rain before 4pm, then a chance of snow between 4pm and 5pm. Seas 5 to 6 ft.

Thursday Night

W wind 20 to 25 kt, with gusts as high as 35 kt. Partly cloudy. Seas around 5 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.