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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Overnight
Low: 27 °F
SSW 15kt
2-3ft
Thursday
High: 41 °F
SW 15kt
2-3ft
Thursday Night
Low: 23 °F
W 15kt
2ft
Friday
High: 29 °F
⇑WSW 15kt
2ft
Friday Night
Low: 6 °F
WNW 15kt
2ft
Saturday
High: 13 °F
WNW 15kt
1-2ft
Saturday Night
Low: 7 °F
NW 10kt
1ft
Sunday
High: 21 °F
NNE 10kt
1ft
Sunday Night
Low: 16 °F
NE 15kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:26 pm EST Jan 21, 2026
Forecast Valid: 11pm EST Jan 21, 2026-6pm EST Jan 28, 2026

View Nearby Observations

Detailed Forecast

Overnight

SSW wind around 15 kt, with gusts as high as 25 kt. A chance of rain and snow before 2am, then a chance of rain between 2am and 3am, then a chance of rain and snow after 3am. Seas 2 to 3 ft.

Thursday

SW wind 10 to 15 kt becoming W in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas 2 to 3 ft.

Thursday Night

W wind 10 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Seas around 2 ft.

Friday

WSW wind 10 to 13 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas around 2 ft.

Friday Night

WNW wind around 15 kt, with gusts as high as 25 kt. Widespread freezing spray after 8pm. Partly cloudy. Seas around 2 ft.

Saturday

WNW wind 10 to 15 kt. Widespread freezing spray. Sunny. Seas 1 to 2 ft.

Saturday Night

NW wind around 10 kt. Widespread freezing spray. Mostly cloudy. Seas around 1 ft.

Sunday

NNW wind 5 to 10 kt becoming NNE in the afternoon. Snow likely. Widespread freezing spray. Seas around 1 ft.

Sunday Night

NE wind 10 to 15 kt. Snow likely. Seas 1 to 2 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.