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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 10:00 pm EDT Mar 23, 2026
Forecast Valid: 10pm EDT Mar 23, 2026-6pm EDT Mar 30, 2026

Tonight

N wind around 10 kt. A chance of snow, mainly between 11pm and 3am. Seas around 2 ft.

Tuesday

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

Tuesday Night

SSW wind around 10 kt becoming WSW after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas around 2 ft.

Wednesday

W wind 5 to 10 kt becoming SSW in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Wednesday Night

SSW wind 10 to 15 kt. A chance of rain after 2am. Seas 1 to 2 ft.

Thursday

SW wind around 10 kt. A chance of rain before 10am. Seas around 1 ft.

Thursday Night

SSW wind 10 to 15 kt. Rain likely, mainly after midnight. Seas 1 to 2 ft.

Friday

NW wind 10 to 15 kt. A chance of rain. Seas 1 to 2 ft.

Friday Night

NNW wind around 10 kt. Partly cloudy. 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.