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Gray/Portland, ME Local Forecast Office

4NM E Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 32 °F
N 35kt⇓
2-3ft
Tonight
Low: 23 °F
N 25kt⇓
3ft
Tuesday
High: 31 °F
WNW 15kt
2-3ft
Tuesday Night
Low: 17 °F
WNW 10kt
1ft
Wednesday
High: 38 °F
⇑S 10kt
1ft
Wednesday Night
Low: 28 °F
WSW 10kt
1ft
Thursday
High: 38 °F
W 10kt
1ft
Thursday Night
Low: 29 °F
ESE 10kt
1ft
Friday
High: 41 °F
WNW 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:04 am EST Feb 23, 2026
Forecast Valid: 9am EST Feb 23, 2026-6pm EST Mar 1, 2026

View Nearby Observations

Detailed Forecast

Today

N wind 30 to 35 kt decreasing to 25 to 30 kt in the afternoon. Winds could gust as high as 45 kt. Snow. Seas 2 to 3 ft.

Tonight

N wind 20 to 25 kt becoming NW 15 to 20 kt after midnight. Winds could gust as high as 30 kt. Snow likely, mainly before 8pm. Seas around 3 ft.

Tuesday

WNW wind 10 to 15 kt. Mostly sunny. Seas 2 to 3 ft.

Tuesday Night

WNW wind 5 to 10 kt becoming WSW after midnight. Partly cloudy. Seas around 1 ft.

Wednesday

SSW wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. Snow before 1pm, then rain and snow likely between 1pm and 4pm, then snow likely after 4pm. Seas around 1 ft.

Wednesday Night

WSW wind around 10 kt. A chance of snow, mixing with rain after 7pm, then gradually ending. Seas around 1 ft.

Thursday

W wind around 10 kt. Mostly sunny. Seas around 1 ft.

Thursday Night

S wind 5 to 10 kt becoming ESE after midnight. Snow likely after 7pm, mixing with rain after 1am. Seas around 1 ft.

Friday

WNW wind 5 to 10 kt. A chance of rain and snow before 10am, then a chance of snow between 10am and noon. 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.