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Gray/Portland, ME Local Forecast Office

4NM E Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 47 °F
⇑S 10kt
1ft
Tonight
Low: 22 °F
W 15kt
1ft
Friday
High: 32 °F
W 20kt
1ft
Friday Night
Low: 28 °F
SW 10kt
1ft
Saturday
High: 39 °F
SSW 10kt
1ft
Saturday Night
Low: 33 °F
WSW 10kt
1ft
Sunday
High: 39 °F
WSW 10kt
1ft
Sunday Night
Low: 26 °F
NNW 10kt
1ft
M.L.King Day
High: 34 °F
W 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:09 am EST Jan 15, 2026
Forecast Valid: 5am EST Jan 15, 2026-6pm EST Jan 21, 2026

View Nearby Observations

Detailed Forecast

Today

S wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. A chance of showers before 7am, then a slight chance of rain between 7am and 8am. Areas of fog before 7am. Seas around 1 ft.

Tonight

W wind around 15 kt, with gusts as high as 25 kt. Widespread freezing spray after 3am. Mostly cloudy. Seas around 1 ft.

Friday

W wind 15 to 20 kt. Widespread freezing spray before noon. Sunny. Seas around 1 ft.

Friday Night

SW wind around 10 kt. Mostly cloudy. Seas around 1 ft.

Saturday

SSW wind around 10 kt. A chance of rain and snow between 1pm and 4pm, then a chance of rain after 4pm. Seas around 1 ft.

Saturday Night

WSW wind 5 to 10 kt. A chance of rain before 10pm. Seas around 1 ft.

Sunday

WSW wind 5 to 10 kt. Mostly cloudy. Seas around 1 ft.

Sunday Night

NNW wind around 10 kt. A chance of snow. Seas around 1 ft.

M.L.King Day

WNW wind around 10 kt becoming WSW in the afternoon. Mostly sunny. 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.