For More Weather Information:

3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:55 pm EDT Aug 21, 2026
Forecast Valid: 1am EDT Aug 22, 2026-6pm EDT Aug 28, 2026

Saturday

NE wind 5 to 10 kt. Showers likely, mainly between 3pm and 4pm. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A chance of showers before 2am, then a chance of showers after 5am. Patchy fog after 9pm. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. A chance of showers, with thunderstorms also possible after 5pm. Areas of fog before 9am. Seas 1 ft or less.

Sunday Night

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

Monday

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

Monday Night

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

Tuesday

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

Tuesday Night

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

Wednesday

Variable winds 5 kt or less. 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.