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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 77 °F
Light Wind
1ft
Tonight
Low: 71 °F
Light Wind
1ft
Friday
High: 80 °F
Light Wind
1ft
Friday Night
Low: 70 °F
Light Wind
1ft
Saturday
High: 82 °F
Light Wind
1ft
Saturday Night
Low: 70 °F
Light Wind
1ft
Sunday
High: 84 °F
Light Wind
1ft
Sunday Night
Low: 68 °F
Light Wind
1ft
Monday
High: 82 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:28 am EDT Aug 6, 2026
Forecast Valid: 10am EDT Aug 6, 2026-6pm EDT Aug 12, 2026

View Nearby Observations

Detailed Forecast

Today

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

Tonight

Variable winds 5 kt or less. Patchy fog after 10pm. Seas around 1 ft.

Friday

Variable winds 5 kt or less. Patchy fog before 9am. Seas around 1 ft.

Friday Night

Variable winds 5 kt or less. Patchy fog. Seas around 1 ft.

Saturday

Variable winds 5 kt or less. A chance of showers between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Patchy fog before 10am. Seas around 1 ft.

Saturday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas around 1 ft.

Sunday

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

Sunday Night

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

Monday

Variable winds 5 kt or less. 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.