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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:37 pm EST Mar 3, 2026
Forecast Valid: 8pm EST Mar 3, 2026-6pm EDT Mar 10, 2026

Tonight

SSE wind 5 to 10 kt becoming WNW after midnight. Rain, snow, and sleet before 1am, then rain and snow likely between 1am and 4am. Seas 1 ft or less.

Wednesday

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

Wednesday Night

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

Thursday

NNE wind 5 to 10 kt becoming ENE in the afternoon. A chance of rain after 4pm. Seas 1 ft or less.

Thursday Night

ENE wind 10 to 15 kt, with gusts as high as 25 kt. A chance of rain before 11pm, then rain and snow. Seas 1 ft or less.

Friday

NE wind 10 to 15 kt, with gusts as high as 25 kt. Rain and snow likely, mainly before 11am. Seas 1 ft or less.

Friday Night

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

Saturday

S wind 5 to 10 kt. Mostly cloudy. Seas 1 ft or less.

Saturday Night

SSW wind around 10 kt, with gusts as high as 20 kt. Rain likely. 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.