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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 38 °F
W 10kt
2ft
Tonight
Low: 31 °F
⇑NNE 15kt
1-2ft
Thursday
High: 38 °F
N 10kt⇓
1-2ft
Thursday Night
Low: 33 °F
Light Wind
1ft
Friday
High: 38 °F
⇑E 15kt
1ft
Friday Night
Low: 29 °F
ENE 15kt
1-2ft
Saturday
High: 34 °F
NNE 15kt⇓
2ft
Saturday Night
Low: 29 °F
NNE 15kt
2ft
Sunday
High: 36 °F
NE 20kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:08 am EST Feb 18, 2026
Forecast Valid: 6am EST Feb 18, 2026-6pm EST Feb 24, 2026

View Nearby Observations

Detailed Forecast

Today

W wind 5 to 10 kt becoming N in the afternoon. A chance of rain between 1pm and 2pm, then a slight chance of snow after 2pm. Seas around 2 ft.

Tonight

NNE wind 10 to 13 kt increasing to 12 to 15 kt after midnight. A chance of snow, mainly before 11pm. Seas 1 to 2 ft.

Thursday

N wind 7 to 10 kt becoming ENE 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Thursday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

Friday

S wind 5 to 8 kt becoming E 10 to 15 kt in the afternoon. A chance of snow between 10am and 1pm, then rain and snow likely. Seas around 1 ft.

Friday Night

E wind around 15 kt becoming NE after midnight. Winds could gust as high as 25 kt. Rain and snow, becoming all snow after 10pm. Seas 1 to 2 ft.

Saturday

NNE wind 12 to 15 kt decreasing to 10 to 13 kt in the afternoon. Winds could gust as high as 25 kt. A chance of snow, mainly between 1pm and 2pm. Seas around 2 ft.

Saturday Night

NNE wind 10 to 15 kt, with gusts as high as 20 kt. A chance of snow. Seas around 2 ft.

Sunday

NE wind 15 to 20 kt, with gusts as high as 30 kt. A chance of snow. Seas around 2 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.