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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 47 °F
W 10kt
2-3ft
Tonight
Low: 34 °F
Light Wind
2ft
Tuesday
High: 42 °F
NNE 10kt
1ft
Tuesday Night
Low: 28 °F
NW 10kt
1ft
Wednesday
High: 42 °F
Light Wind
1ft
Wednesday Night
Low: 34 °F
S 10kt
2ft
Thursday
High: 48 °F
⇑SSE 15kt
2ft
Thursday Night
Low: 39 °F
SSW 15kt
3ft
Friday
High: 56 °F
S 10kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:37 am EDT Apr 6, 2026
Forecast Valid: 8am EDT Apr 6, 2026-6pm EDT Apr 12, 2026

View Nearby Observations

Detailed Forecast

Today

W wind around 10 kt, with gusts as high as 25 kt. Increasing clouds. Seas 2 to 3 ft.

Tonight

Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.

Tuesday

WSW wind 5 to 10 kt becoming ENE in the afternoon. A chance of rain before 7am, then a chance of rain and snow between 7am and 8am, then a chance of rain after 8am. Seas around 1 ft.

Tuesday Night

NW wind around 10 kt. Mostly cloudy, then gradually becoming clear. Seas around 1 ft.

Wednesday

Variable winds 5 kt or less. Sunny. Seas around 1 ft.

Wednesday Night

S wind around 10 kt becoming SSW after midnight. Mostly clear. Seas around 2 ft.

Thursday

SSW wind 5 to 8 kt becoming SSE 10 to 15 kt in the afternoon. Sunny. Seas around 2 ft.

Thursday Night

SSW wind 10 to 15 kt. Partly cloudy. Seas around 3 ft.

Friday

S wind 5 to 10 kt. Partly sunny. 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.