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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 12 °F
NNW 15kt
2ft
Monday
High: 26 °F
NNW 10kt
2ft
Monday Night
Low: 20 °F
SW 10kt
2ft
Tuesday
High: 38 °F
SSW 10kt
2-3ft
Tuesday Night
Low: 33 °F
Light Wind
2ft
Wednesday
High: 45 °F
Light Wind
1-2ft
Wednesday Night
Low: 36 °F
Light Wind
2ft
Thursday
High: 45 °F
Light Wind
2ft
Thursday Night
Low: 36 °F
⇑ENE 10kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:30 pm EST Mar 1, 2026
Forecast Valid: 6pm EST Mar 1, 2026-6pm EDT Mar 8, 2026

View Nearby Observations

Detailed Forecast

Tonight

NNW wind 10 to 15 kt. Widespread freezing spray after 9pm. Mostly clear. Seas around 2 ft.

Monday

NNW wind 5 to 10 kt becoming WSW in the afternoon. Widespread freezing spray before noon. Sunny. Seas around 2 ft.

Monday Night

SW wind around 10 kt, with gusts as high as 20 kt. Widespread freezing spray after 1am. Mostly clear. Seas around 2 ft.

Tuesday

SSW wind around 10 kt, with gusts as high as 20 kt. A chance of snow between 1pm and 3pm, then rain and snow likely. Widespread freezing spray before 8am. Seas 2 to 3 ft.

Tuesday Night

Variable winds 5 kt or less. Rain and snow likely before 8pm, then rain. Seas around 2 ft.

Wednesday

Variable winds 5 kt or less. A chance of rain before 7am. Seas 1 to 2 ft.

Wednesday Night

Variable winds 5 kt or less. A chance of rain after 10pm. Seas around 2 ft.

Thursday

Variable winds 5 kt or less. A chance of rain. Seas around 2 ft.

Thursday Night

ENE wind 5 to 8 kt increasing to 7 to 10 kt after midnight. Rain likely. Seas around 3 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.