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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:25 am EST Jan 19, 2026
Forecast Valid: 6am EST Jan 19, 2026-6pm EST Jan 25, 2026

M.L.King Day

N wind 5 to 8 kt becoming WSW 7 to 10 kt in the afternoon. Snow likely, mainly before 11am. Seas around 1 ft.

Tonight

W wind around 15 kt, with gusts as high as 25 kt. Widespread freezing spray after 3am. Partly cloudy. Seas around 1 ft.

Tuesday

W wind around 15 kt, with gusts as high as 20 kt. Widespread freezing spray. Mostly sunny. Seas around 1 ft.

Tuesday Night

W wind 10 to 15 kt, with gusts as high as 25 kt. Widespread freezing spray. Mostly clear. Seas around 1 ft.

Wednesday

WSW wind around 10 kt becoming SSW in the afternoon. Widespread freezing spray before noon. Mostly sunny. Seas around 1 ft.

Wednesday Night

SSW wind around 15 kt. A chance of snow before 4am. Seas around 1 ft.

Thursday

SW wind 10 to 15 kt. Partly sunny. Seas around 1 ft.

Thursday Night

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

Friday

W wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. 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.