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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 32 °F
N 25kt
10ft
Tonight
Low: 22 °F
NW 20kt
10ft
Tuesday
High: 30 °F
WNW 10kt
10ft
Tuesday Night
Low: 17 °F
WNW 10kt
7ft
Wednesday
High: 38 °F
S 10kt
3-4ft
Wednesday Night
Low: 29 °F
WSW 10kt
2-3ft
Thursday
High: 38 °F
W 10kt
1-2ft
Thursday Night
Low: 28 °F
NNE 10kt
1-2ft
Friday
High: 38 °F
N 10kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:40 pm EST Feb 23, 2026
Forecast Valid: 5pm EST Feb 23, 2026-6pm EST Mar 2, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

N wind around 25 kt, with gusts as high as 30 kt. Snow. Seas around 10 ft.

Tonight

NW wind 15 to 20 kt. Snow likely with patchy blowing snow before 9pm, then a slight chance of snow between 9pm and 10pm, then patchy blowing snow after 10pm. Seas 7 ft building to 10 ft.

Tuesday

WNW wind around 10 kt. Mostly sunny. Seas 10 ft subsiding to 8 ft.

Tuesday Night

WNW wind 5 to 10 kt becoming SW after midnight. Increasing clouds. Seas 7 ft subsiding to 5 ft.

Wednesday

S wind 5 to 10 kt. Snow before noon, then rain and snow between noon and 3pm, then a chance of rain after 3pm. Seas 3 to 4 ft.

Wednesday Night

SW wind 5 to 10 kt becoming W after midnight. A chance of rain before 7pm. Seas 2 to 3 ft.

Thursday

W wind 5 to 10 kt. Mostly sunny. Seas 1 to 2 ft.

Thursday Night

SW wind 5 to 10 kt becoming NNE after midnight. Snow likely. Seas 1 to 2 ft.

Friday

N wind 5 to 10 kt becoming WNW in the afternoon. A chance of snow. Seas around 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.