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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:42 pm EST Jan 20, 2026
Forecast Valid: 1pm EST Jan 20, 2026-6pm EST Jan 26, 2026

This Afternoon

W wind around 15 kt, with gusts as high as 30 kt. Mostly sunny. Seas 1 ft or less.

Tonight

WSW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly clear. Seas 1 ft or less.

Wednesday

WSW wind 10 to 15 kt, with gusts as high as 25 kt. A slight chance of snow after 5pm. Seas 1 ft or less.

Wednesday Night

SSW wind around 15 kt, with gusts as high as 25 kt. A chance of snow before 5am. Seas 1 ft or less.

Thursday

SW wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 1 ft or less.

Thursday Night

W wind around 15 kt, with gusts as high as 25 kt. Partly cloudy. Seas 1 ft or less.

Friday

W wind around 15 kt, with gusts as high as 30 kt. Partly sunny. Seas 1 ft or less.

Friday Night

WNW wind 15 to 20 kt, with gusts as high as 30 kt. Partly cloudy. Seas 1 ft or less.

Saturday

WNW wind around 15 kt, with gusts as high as 30 kt. 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.