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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

This Afternoon
High: 40 °F
NW 15kt
< 1ft
Tonight
Low: 27 °F
Light Wind
< 1ft
Tuesday
High: 39 °F
E 10kt
< 1ft
Tuesday Night
Low: 30 °F
N 15kt
< 1ft
Wednesday
High: 37 °F
NW 10kt⇓
< 1ft
Wednesday Night
Low: 30 °F
⇑SW 10kt
< 1ft
Thursday
High: 38 °F
⇑W 20kt
< 1ft
Thursday Night
Low: 13 °F
WNW 20kt
< 1ft
Friday
High: 27 °F
WNW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:02 pm EST Dec 1, 2025
Forecast Valid: 1pm EST Dec 1, 2025-6pm EST Dec 7, 2025

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Detailed Forecast

This Afternoon

NW wind 10 to 15 kt, with gusts as high as 20 kt. Sunny. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. Increasing clouds. Seas 1 ft or less.

Tuesday

WSW wind 5 to 10 kt becoming ENE in the afternoon. Rain and snow, becoming all rain after 1pm. Seas 1 ft or less.

Tuesday Night

NE wind around 15 kt becoming NNW after midnight. Winds could gust as high as 30 kt. Rain and snow before 2am, then a chance of snow between 2am and 4am. Seas 1 ft or less.

Wednesday

NW wind 7 to 10 kt becoming W 5 to 8 kt in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Seas 1 ft or less.

Wednesday Night

SW wind 5 to 8 kt increasing to 7 to 10 kt after midnight. Winds could gust as high as 20 kt. Mostly cloudy. Seas 1 ft or less.

Thursday

SW wind 10 to 15 kt becoming W 15 to 20 kt in the afternoon. Winds could gust as high as 30 kt. A chance of snow showers between noon and 3pm. Seas 1 ft or less.

Thursday Night

WNW wind 15 to 20 kt, with gusts as high as 30 kt. Mostly clear. Seas 1 ft or less.

Friday

WNW wind around 10 kt becoming WSW in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas 1 ft or less.

*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.