For More Weather Information:

Gray/Portland, ME Local Forecast Office

10NM S Portsmouth NH

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 74 °F
SSE 10kt
1ft
Tonight
Low: 69 °F
Light Wind
1-2ft
Tuesday
High: 81 °F
Light Wind
1-2ft
Tuesday Night
Low: 69 °F
Light Wind
1ft
Wednesday
High: 84 °F
Light Wind
1ft
Wednesday Night
Low: 72 °F
SSW 10kt
1ft
Thursday
High: 83 °F
S 10kt
1ft
Thursday Night
Low: 72 °F
Light Wind
1ft
Friday
High: 82 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:50 pm EDT Jul 14, 2025
Forecast Valid: 4pm EDT Jul 14, 2025-6pm EDT Jul 21, 2025

View Nearby Observations

Detailed Forecast

Late Afternoon

SSE wind around 10 kt. Scattered showers and thunderstorms. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 7pm, then scattered showers and thunderstorms between 7pm and 11pm, then isolated showers after 11pm. Some of the storms could produce heavy rainfall. Seas 1 to 2 ft.

Tuesday

Variable winds 5 kt or less. A slight chance of showers after 2pm. Seas 1 to 2 ft.

Tuesday Night

Variable winds 5 kt or less. Patchy fog between 3am and 4am, then Patchy fog after 5am. Seas around 1 ft.

Wednesday

Variable winds 5 kt or less. Patchy fog between 7am and 8am. Seas around 1 ft.

Wednesday Night

SSW wind 5 to 10 kt. Patchy fog. Seas around 1 ft.

Thursday

S wind 5 to 10 kt. A chance of showers and thunderstorms after 2pm. Patchy fog before 10am. Seas around 1 ft.

Thursday Night

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

Friday

Variable winds 5 kt or less. A chance of showers. Patchy fog before 10am. Seas around 1 ft.

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.