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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 39 °F
Light Wind
2ft
Wednesday
High: 55 °F
SW 10kt
2ft
Wednesday Night
Low: 36 °F
ENE 10kt
2ft
Thursday
High: 38 °F
ENE 10kt
3ft
Thursday Night
Low: 37 °F
E 10kt
3ft
Friday
High: 59 °F
S 10kt
3ft
Friday Night
Low: 48 °F
SW 10kt
3ft
Saturday
High: 57 °F
E 10kt
2-3ft
Saturday Night
Low: 42 °F
E 10kt
2-3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:56 pm EDT Mar 31, 2026
Forecast Valid: 8pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Showers and thunderstorms likely before 2am, then a chance of showers. Areas of fog between 9pm and 10pm, then Areas of fog after 11pm. Seas around 2 ft.

Wednesday

SW wind around 10 kt becoming NNE in the afternoon. A chance of showers before 3pm. Seas around 2 ft.

Wednesday Night

ENE wind around 10 kt. A chance of rain, mainly after 8pm. Seas around 2 ft.

Thursday

ENE wind around 10 kt. A chance of rain before 11am, then a chance of rain and sleet between 11am and noon, then a chance of rain after noon. Seas around 3 ft.

Thursday Night

E wind 5 to 10 kt. A chance of rain. Seas around 3 ft.

Friday

SSE wind 5 to 10 kt becoming S in the afternoon. Mostly cloudy. Seas around 3 ft.

Friday Night

SW wind around 10 kt. Mostly cloudy. Seas around 3 ft.

Saturday

W wind around 10 kt becoming E in the afternoon. Partly sunny. Seas 2 to 3 ft.

Saturday Night

E wind 5 to 10 kt. A chance of rain. Seas 2 to 3 ft.

Winds and seas higher in and near tstms.

*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.