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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Overnight
Low: 32 °F
ENE 15kt
4ft
Friday
High: 37 °F
NE 15kt
4-5ft
Friday Night
Low: 34 °F
ENE 10kt
5-6ft
Saturday
High: 45 °F
⇑SSW 10kt
5-6ft
Saturday Night
Low: 42 °F
SW 15kt
5ft
Sunday
High: 52 °F
W 10kt
3-4ft
Sunday Night
Low: 38 °F
WSW 10kt
3ft
Monday
High: 54 °F
SSW 10kt
3ft
Monday Night
Low: 42 °F
WSW 10kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:27 pm EST Mar 5, 2026
Forecast Valid: 12am EST Mar 6, 2026-6pm EDT Mar 12, 2026

View Nearby Observations

Detailed Forecast

Overnight

ENE wind around 15 kt. Snow. Seas around 4 ft.

Friday

NE wind 10 to 15 kt, with gusts as high as 20 kt. Rain and snow before noon, then a slight chance of rain between noon and 1pm. Patchy fog after 1pm. Seas 4 to 5 ft.

Friday Night

ENE wind 5 to 10 kt becoming E after midnight. Cloudy. Seas 5 to 6 ft.

Saturday

SSW wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. Mostly cloudy. Seas 5 to 6 ft.

Saturday Night

SW wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers after 7pm. Seas around 5 ft.

Sunday

W wind 5 to 10 kt. Partly sunny. Seas 3 to 4 ft.

Sunday Night

WSW wind 5 to 10 kt. Mostly clear. Seas around 3 ft.

Monday

SSW wind around 10 kt. Sunny. Seas around 3 ft.

Monday Night

WSW wind around 10 kt. Mostly clear. Seas around 3 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.