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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tuesday
High: 42 °F
E 10kt
1ft
Tuesday Night
Low: 34 °F
⇑N 25kt
2-3ft
Wednesday
High: 39 °F
NNW 15kt⇓
2-3ft
Wednesday Night
Low: 35 °F
⇑SW 15kt
2-3ft
Thursday
High: 39 °F
⇑W 25kt
3ft
Thursday Night
Low: 17 °F
WNW 25kt⇓
3ft
Friday
High: 29 °F
WNW 15kt
2ft
Friday Night
Low: 27 °F
WSW 10kt
2ft
Saturday
High: 38 °F
W 10kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:48 am EST Dec 2, 2025
Forecast Valid: 1am EST Dec 2, 2025-6pm EST Dec 8, 2025

View Nearby Observations

Detailed Forecast

Tuesday

S wind 5 to 10 kt becoming E in the afternoon. A slight chance of snow before 8am, then a chance of rain and snow between 8am and 10am, then rain after 10am. Seas around 1 ft.

Tuesday Night

ENE wind 20 to 23 kt becoming N 22 to 25 kt after midnight. Winds could gust as high as 30 kt. Rain, possibly mixed with snow before 4am, then a chance of rain. Seas 2 to 3 ft.

Wednesday

NNW wind 10 to 15 kt becoming W 5 to 8 kt in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas 2 to 3 ft.

Wednesday Night

SW wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Mostly cloudy. Seas 2 to 3 ft.

Thursday

WSW wind 15 to 20 kt becoming W 20 to 25 kt in the afternoon. Winds could gust as high as 35 kt. A chance of snow showers between 4pm and 5pm. Seas around 3 ft.

Thursday Night

WNW wind 22 to 25 kt decreasing to 20 to 23 kt after midnight. Winds could gust as high as 35 kt. Mostly clear. Seas around 3 ft.

Friday

WNW wind 10 to 15 kt becoming WSW in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas around 2 ft.

Friday Night

WSW wind around 10 kt. Mostly cloudy. Seas around 2 ft.

Saturday

W wind around 10 kt becoming SW in the afternoon. A chance of rain. 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.