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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 29 °F
NNW 10kt
1-2ft
Tonight
Low: 21 °F
SW 10kt
3ft
Tuesday
High: 38 °F
SSW 15kt
3ft
Tuesday Night
Low: 36 °F
SSW 10kt
1-2ft
Wednesday
High: 44 °F
WNW 10kt
1-2ft
Wednesday Night
Low: 38 °F
Light Wind
2ft
Thursday
High: 42 °F
NE 10kt
2ft
Thursday Night
Low: 36 °F
⇑ENE 20kt
2-3ft
Friday
High: 38 °F
ENE 25kt⇓
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:25 am EST Mar 2, 2026
Forecast Valid: 7am EST Mar 2, 2026-6pm EDT Mar 8, 2026

View Nearby Observations

Detailed Forecast

Today

NNW wind 5 to 10 kt becoming WSW in the afternoon. Widespread freezing spray before 1pm. Sunny. Seas 1 to 2 ft.

Tonight

SW wind 5 to 10 kt. Widespread freezing spray between 2am and 5am. Mostly clear. Seas 1 ft building to 3 ft.

Tuesday

SSW wind around 15 kt, with gusts as high as 25 kt. A chance of snow before 3pm, then a chance of rain between 3pm and 5pm, then a chance of rain and snow after 5pm. Widespread freezing spray before 7am. Seas around 3 ft.

Tuesday Night

SSW wind around 10 kt becoming NW after midnight. Rain and snow likely before 8pm, then rain. Seas 1 to 2 ft.

Wednesday

WNW wind 5 to 10 kt becoming S in the afternoon. A chance of rain before 7am. Seas 1 to 2 ft.

Wednesday Night

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

Thursday

NNE wind 5 to 10 kt becoming ENE in the afternoon. A chance of rain. Seas around 2 ft.

Thursday Night

ENE wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Winds could gust as high as 30 kt. A chance of rain before 9pm, then rain and snow likely. Seas 2 to 3 ft.

Friday

ENE wind 20 to 25 kt decreasing to 15 to 20 kt in the afternoon. Winds could gust as high as 30 kt. Rain and snow likely before 4pm, then a chance of rain. 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.