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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Overnight
Low: 15 °F
NNW 15kt
2ft
Monday
High: 27 °F
NNW 10kt⇓
1-2ft
Monday Night
Low: 24 °F
⇑SW 15kt
1-2ft
Tuesday
High: 38 °F
SSW 15kt
3ft
Tuesday Night
Low: 35 °F
SSW 10kt
2ft
Wednesday
High: 43 °F
WNW 10kt
1-2ft
Wednesday Night
Low: 39 °F
SSW 10kt
2ft
Thursday
High: 45 °F
SW 10kt
2ft
Thursday Night
Low: 37 °F
⇑ENE 20kt
2-3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:42 pm EST Mar 1, 2026
Forecast Valid: 11pm EST Mar 1, 2026-6pm EDT Mar 8, 2026

View Nearby Observations

Detailed Forecast

Overnight

NNW wind 10 to 15 kt, with gusts as high as 20 kt. Widespread freezing spray. Mostly clear. Seas around 2 ft.

Monday

NNW wind 7 to 10 kt becoming W 5 to 8 kt in the afternoon. Widespread freezing spray before 1pm. Sunny. Seas 1 to 2 ft.

Monday Night

SW wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 25 kt. Widespread freezing spray between 2am and 5am. Mostly clear. Seas 1 to 2 ft.

Tuesday

SSW wind around 15 kt, with gusts as high as 25 kt. A chance of snow between 1pm and 3pm, then rain and snow likely. 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 around 2 ft.

Wednesday

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

Wednesday Night

SSW wind around 10 kt. A chance of rain after 10pm. Seas around 2 ft.

Thursday

SW wind around 10 kt becoming NE 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 25 kt. Rain likely. Seas 2 to 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.