For More Weather Information:

4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:26 am EST Dec 28, 2025
Forecast Valid: 2am EST Dec 28, 2025-6pm EST Jan 3, 2026

Sunday

Variable winds 5 kt or less. Increasing clouds. Seas around 1 ft.

Sunday Night

SW wind 5 to 10 kt becoming S after midnight. Rain, mainly after midnight. Seas around 1 ft.

Monday

S wind around 10 kt. Rain. Patchy fog before 10am. Seas around 1 ft.

Monday Night

W wind 15 to 20 kt, with gusts as high as 25 kt. Rain likely before 10pm. Seas 1 to 2 ft.

Tuesday

W wind around 20 kt, with gusts as high as 30 kt. Partly sunny. Seas around 1 ft.

Tuesday Night

W wind 15 to 20 kt. Partly cloudy. Seas around 1 ft.

Wednesday

WSW wind 10 to 15 kt, with gusts as high as 20 kt. Mostly cloudy. Seas around 1 ft.

Wednesday Night

SW wind 10 to 15 kt becoming W after midnight. A chance of snow. Seas around 1 ft.

New Year's Day

W wind around 10 kt. A chance of snow. 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.