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Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tuesday
High: 72 °F
SSW 10kt
2-3ft
Tuesday Night
Low: 63 °F
Light Wind
2ft
Wednesday
High: 66 °F
Light Wind
2ft
Wednesday Night
Low: 63 °F
Light Wind
2ft
Thursday
High: 66 °F
Light Wind
2ft
Thursday Night
Low: 62 °F
Light Wind
2ft
Friday
High: 67 °F
Light Wind
2ft
Friday Night
Low: 64 °F
Light Wind
2ft
Saturday
High: 70 °F
Light Wind
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:41 am EDT Jul 8, 2025
Forecast Valid: 3am EDT Jul 8, 2025-6pm EDT Jul 14, 2025

View Nearby Observations

Detailed Forecast

Tuesday

SSW wind 5 to 10 kt becoming E in the afternoon. Isolated showers between 11am and 2pm, then scattered showers and thunderstorms after 2pm. Patchy fog between 8am and 2pm. Seas 2 to 3 ft.

Tuesday Night

Variable winds 5 kt or less. Scattered showers and thunderstorms, mainly after 4am. Seas around 2 ft.

Wednesday

Variable winds 5 kt or less. Scattered showers, mainly before 8am. Seas around 2 ft.

Wednesday Night

Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

Thursday

Variable winds 5 kt or less. Scattered showers after 8am. Seas around 2 ft.

Thursday Night

Variable winds 5 kt or less. Scattered showers before 2am. Seas around 2 ft.

Friday

Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

Friday Night

Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

Saturday

Variable winds 5 kt or less. Partly sunny. Seas around 2 ft.

Winds and seas higher in and near tstms.

*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.