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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 62 °F
S 10kt
2ft
Juneteenth
High: 70 °F
⇑S 10kt
1-2ft
Thursday Night
Low: 66 °F
SW 15kt
2ft
Friday
High: 73 °F
W 15kt
2ft
Friday Night
Low: 63 °F
W 10kt
1-2ft
Saturday
High: 72 °F
SSE 10kt
1ft
Saturday Night
Low: 64 °F
SSW 10kt
1-2ft
Sunday
High: 72 °F
SSW 10kt
2ft
Sunday Night
Low: 64 °F
SSE 10kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:05 pm EDT Jun 18, 2025
Forecast Valid: 4pm EDT Jun 18, 2025-6pm EDT Jun 25, 2025

View Nearby Observations

Detailed Forecast

Tonight

S wind 5 to 10 kt. Patchy fog. Seas around 2 ft.

Juneteenth

SSW wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. Patchy fog before 11am. Seas 1 to 2 ft.

Thursday Night

SW wind around 15 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Seas around 2 ft.

Friday

W wind around 15 kt, with gusts as high as 25 kt. Sunny. Seas around 2 ft.

Friday Night

W wind around 10 kt. Mostly clear. Seas 1 to 2 ft.

Saturday

W wind 5 to 10 kt becoming SSE in the afternoon. Sunny. Seas around 1 ft.

Saturday Night

SSW wind around 10 kt. A chance of showers after 2am. Seas 1 to 2 ft.

Sunday

SSW wind around 10 kt. A chance of showers. Seas around 2 ft.

Sunday Night

SSE wind 5 to 10 kt becoming SSW after midnight. Partly cloudy. 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.