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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 12 °F
NW 15kt
7-8ft
Tuesday
High: 22 °F
WNW 15kt⇓
7ft
Tuesday Night
Low: 11 °F
W 10kt
3-4ft
Wednesday
High: 23 °F
W 10kt
2-3ft
Wednesday Night
Low: 10 °F
WNW 10kt
1-2ft
Thursday
High: 22 °F
WNW 15kt
1ft
Thursday Night
Low: 7 °F
WNW 15kt
1ft
Friday
High: 19 °F
W 10kt
1ft
Friday Night
Low: 9 °F
WNW 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:54 pm EST Jan 26, 2026
Forecast Valid: 6pm EST Jan 26, 2026-6pm EST Feb 2, 2026

View Nearby Observations

Detailed Forecast

Tonight

N wind 10 to 15 kt becoming NW after midnight. Winds could gust as high as 25 kt. Snow, mainly before 1am. The snow could be heavy at times. Widespread freezing spray after 7pm. Seas 7 to 8 ft.

Tuesday

WNW wind 12 to 15 kt becoming W 10 to 13 kt in the afternoon. Widespread freezing spray before 2pm. Increasing clouds. Seas 7 ft subsiding to 5 ft.

Tuesday Night

W wind around 10 kt. Widespread freezing spray after 8pm. Mostly cloudy, then gradually becoming mostly clear. Seas 3 to 4 ft.

Wednesday

W wind around 10 kt. Widespread freezing spray before 1pm. Sunny. Seas 2 to 3 ft.

Wednesday Night

WNW wind 5 to 10 kt. Widespread freezing spray. Mostly cloudy. Seas 1 to 2 ft.

Thursday

WNW wind 10 to 15 kt. Widespread freezing spray. Mostly sunny. Seas around 1 ft.

Thursday Night

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

Friday

W wind around 10 kt, with gusts as high as 20 kt. Widespread freezing spray. Mostly sunny. Seas around 1 ft.

Friday Night

WNW wind around 10 kt. Widespread freezing spray. Partly 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.