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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 15 °F
NW 15kt
1-2ft
Monday
High: 31 °F
NW 10kt⇓
1ft
Monday Night
Low: 27 °F
Light Wind
1ft
Tuesday
High: 39 °F
Light Wind
1ft
Tuesday Night
Low: 36 °F
NE 10kt
1ft
Wednesday
High: 43 °F
W 10kt
1-2ft
Wednesday Night
Low: 36 °F
WNW 15kt
1-2ft
Thursday
High: 42 °F
WNW 10kt
1-2ft
Thursday Night
Low: 38 °F
SW 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:11 pm EST Jan 4, 2026
Forecast Valid: 8pm EST Jan 4, 2026-6pm EST Jan 11, 2026

View Nearby Observations

Detailed Forecast

Tonight

NW wind around 15 kt, with gusts as high as 20 kt. Widespread freezing spray after 10pm. Mostly clear. Seas 1 to 2 ft.

Monday

NW wind 7 to 10 kt becoming W 5 to 8 kt in the afternoon. A chance of snow, mainly after 5pm. Widespread freezing spray before 10am. Seas around 1 ft.

Monday Night

Variable winds 5 kt or less. Snow likely, mainly before 1am. Seas around 1 ft.

Tuesday

Variable winds 5 kt or less. A chance of snow between 7am and 8am. Seas around 1 ft.

Tuesday Night

ENE wind 5 to 10 kt becoming NNE after midnight. A chance of rain and snow before 8pm, then rain. Seas around 1 ft.

Wednesday

NNW wind around 10 kt becoming W in the afternoon. Rain likely before 10am. Seas 1 to 2 ft.

Wednesday Night

WNW wind 10 to 15 kt. Partly cloudy. Seas 1 to 2 ft.

Thursday

WNW wind 5 to 10 kt becoming WSW in the afternoon. Sunny. Seas 1 to 2 ft.

Thursday Night

WSW wind 5 to 10 kt becoming SSW after midnight. Mostly cloudy. 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.