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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 17 °F
Light Wind
2ft
Tuesday
High: 37 °F
SSW 10kt
2-3ft
Tuesday Night
Low: 33 °F
S 10kt
2ft
Wednesday
High: 47 °F
Light Wind
2-3ft
Wednesday Night
Low: 32 °F
Light Wind
2-3ft
Thursday
High: 43 °F
Light Wind
2ft
Thursday Night
Low: 34 °F
⇑ENE 10kt
2-3ft
Friday
High: 38 °F
ENE 15kt
4-5ft
Friday Night
Low: 35 °F
ENE 10kt
6ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:26 pm EST Mar 2, 2026
Forecast Valid: 5pm EST Mar 2, 2026-6pm EDT Mar 9, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Widespread freezing spray after midnight. Mostly clear. Seas around 2 ft.

Tuesday

SSW wind around 10 kt. Snow likely, mainly after 4pm. Widespread freezing spray before 8am. Seas 2 to 3 ft.

Tuesday Night

S wind 5 to 10 kt becoming N after midnight. Rain and snow before 4am, then snow likely between 4am and 5am, then snow likely, possibly mixed with rain after 5am. Seas around 2 ft.

Wednesday

Variable winds 5 kt or less. A chance of rain before 8am. Seas 2 to 3 ft.

Wednesday Night

Variable winds 5 kt or less. Partly cloudy. Seas 2 to 3 ft.

Thursday

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

Thursday Night

ENE wind 5 to 8 kt increasing to 7 to 10 kt after midnight. A chance of rain before 9pm, then rain and snow likely. Seas 2 to 3 ft.

Friday

ENE wind 10 to 15 kt. Rain and snow likely, mainly before 1pm. Seas 4 to 5 ft.

Friday Night

ENE wind 5 to 10 kt. A chance of rain and snow before 9pm, then a chance of rain after 1am. Seas around 6 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.