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18NM NNE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:54 pm EST Nov 7, 2025
Forecast Valid: 3pm EST Nov 7, 2025-6pm EST Nov 14, 2025

This Afternoon

S wind around 10 kt. Mostly cloudy. Seas 1 ft or less.

Tonight

S wind 5 to 10 kt. Rain, mainly before 2am. Seas 1 ft or less.

Saturday

Variable winds 5 kt or less. A slight chance of rain before 8am. Seas 1 ft or less.

Saturday Night

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

Sunday

Variable winds 5 kt or less. A chance of rain after 1pm. Seas 1 ft or less.

Sunday Night

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

Monday

Variable winds 5 kt or less. Rain likely, mainly before 2pm. Seas 1 ft or less.

Monday Night

W wind 5 to 10 kt. Scattered showers. Seas 1 ft or less.

Veterans Day

W wind around 10 kt, with gusts as high as 20 kt. Mostly sunny. Seas 1 ft or less.

*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.