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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Wednesday
High: 70 °F
Light Wind
1-2ft
Wednesday Night
Low: 60 °F
Light Wind
2ft
Thursday
High: 75 °F
Light Wind
2ft
Thursday Night
Low: 61 °F
Light Wind
2ft
Friday
High: 75 °F
Light Wind
1-2ft
Friday Night
Low: 62 °F
Light Wind
1-2ft
Saturday
High: 71 °F
Light Wind
1ft
Saturday Night
Low: 62 °F
Light Wind
1ft
Sunday
High: 75 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:33 pm EDT Jun 23, 2026
Forecast Valid: 2am EDT Jun 24, 2026-6pm EDT Jun 30, 2026

View Nearby Observations

Detailed Forecast

Wednesday

Variable winds 5 kt or less. Patchy fog before 7am. Seas 1 to 2 ft.

Wednesday Night

Variable winds 5 kt or less. Mostly clear. Seas around 2 ft.

Thursday

Variable winds 5 kt or less. Mostly sunny. Seas around 2 ft.

Thursday Night

Variable winds 5 kt or less. A chance of showers after 11pm. Seas around 2 ft.

Friday

Variable winds 5 kt or less. Showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Seas 1 to 2 ft.

Friday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Seas 1 to 2 ft.

Saturday

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

Saturday Night

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

Sunday

Variable winds 5 kt or less. Mostly sunny. 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.