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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

This Afternoon
High: 71 °F
SE 10kt
2ft
Tonight
Low: 59 °F
S 10kt
2ft
Thursday
High: 72 °F
⇑SSE 20kt
4ft
Thursday Night
Low: 61 °F
S 10kt
4-5ft
Juneteenth
High: 77 °F
WSW 10kt
2-3ft
Friday Night
Low: 61 °F
W 10kt
2ft
Saturday
High: 75 °F
WNW 15kt
1-2ft
Saturday Night
Low: 60 °F
Light Wind
1ft
Sunday
High: 74 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:26 pm EDT Jun 17, 2026
Forecast Valid: 3pm EDT Jun 17, 2026-6pm EDT Jun 24, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SE wind around 10 kt. Sunny. Seas around 2 ft.

Tonight

S wind 5 to 10 kt. A chance of showers after 5am. Patchy fog after 3am. Seas around 2 ft.

Thursday

SSE wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Showers, with thunderstorms also possible after 2pm. Patchy fog before 8am. Seas 2 ft building to 4 ft.

Thursday Night

S wind around 10 kt becoming W after midnight. Showers likely before 8pm. Seas 4 to 5 ft.

Juneteenth

WSW wind around 10 kt. Sunny. Seas 2 to 3 ft.

Friday Night

W wind around 10 kt. Clear. Seas around 2 ft.

Saturday

WNW wind 10 to 15 kt. Sunny. Seas 1 to 2 ft.

Saturday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

Sunday

Variable winds 5 kt or less. A chance of showers. 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.