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10NM NE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 10:15 pm EST Feb 28, 2026
Forecast Valid: 10pm EST Feb 28, 2026-6pm EST Mar 7, 2026

Tonight

SW wind 5 to 10 kt becoming N after midnight. Partly cloudy. Seas 1 ft or less.

Sunday

N wind around 10 kt becoming NW in the afternoon. Winds could gust as high as 20 kt. Snow likely, mainly before 3pm. Seas 1 ft or less.

Sunday Night

NW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 25 kt. Mostly clear. Seas 1 ft or less.

Monday

NW wind 5 to 10 kt becoming W in the afternoon. Sunny. Seas 1 ft or less.

Monday Night

WSW wind 5 to 10 kt becoming W in the evening. Mostly clear. Seas 1 ft or less.

Tuesday

SSW wind 10 to 15 kt, with gusts as high as 25 kt. A chance of snow after 2pm, mixing with rain after 4pm. Seas 1 ft or less.

Tuesday Night

S wind around 10 kt becoming W after midnight. Winds could gust as high as 20 kt. Rain and snow. Seas 1 ft or less.

Wednesday

NW wind 5 to 10 kt becoming SE in the afternoon. Rain and snow likely, mainly before 9am. Seas 1 ft or less.

Wednesday Night

S wind 5 to 10 kt. A chance of rain. 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.