For More Weather Information:

Gray/Portland, ME Local Forecast Office

21NM NE Portsmouth NH

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 72 °F
Light Wind
< 1ft
Tonight
Low: 66 °F
Light Wind
< 1ft
Sunday
High: 81 °F
Light Wind
< 1ft
Sunday Night
Low: 64 °F
Light Wind
< 1ft
Monday
High: 77 °F
⇑S 10kt
< 1ft
Monday Night
Low: 64 °F
Light Wind
< 1ft
Tuesday
High: 78 °F
Light Wind
< 1ft
Tuesday Night
Low: 61 °F
Light Wind
< 1ft
Wednesday
High: 73 °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 Aug 8, 2026
Forecast Valid: 5pm EDT Aug 8, 2026-6pm EDT Aug 15, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

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

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog before 8pm, then Patchy fog between 2am and 3am. Seas 1 ft or less.

Sunday

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

Sunday Night

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

Monday

Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of showers before 1am. Seas 1 ft or less.

Tuesday

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

Tuesday Night

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

Wednesday

Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

Winds and seas higher in and near tstms.

*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.