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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 10 °F
W 10kt
3-4ft
Wednesday
High: 23 °F
WNW 10kt
2-3ft
Wednesday Night
Low: 11 °F
Light Wind
1-2ft
Thursday
High: 24 °F
NW 10kt
1ft
Thursday Night
Low: 8 °F
WNW 15kt
1ft
Friday
High: 19 °F
W 15kt
1ft
Friday Night
Low: 5 °F
WNW 10kt
1ft
Saturday
High: 24 °F
Light Wind
1ft
Saturday Night
Low: 16 °F
⇑NNE 20kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:51 pm EST Jan 27, 2026
Forecast Valid: 6pm EST Jan 27, 2026-6pm EST Feb 3, 2026

View Nearby Observations

Detailed Forecast

Tonight

WSW wind around 10 kt becoming WNW after midnight. Widespread freezing spray after 7pm. Mostly cloudy, then gradually becoming mostly clear. Seas 3 to 4 ft.

Wednesday

WNW wind 5 to 10 kt. Widespread freezing spray before noon. Increasing clouds. Seas 2 to 3 ft.

Wednesday Night

Variable winds 5 kt or less. Widespread freezing spray after midnight. Mostly cloudy. Seas 1 to 2 ft.

Thursday

NW wind 5 to 10 kt. Widespread freezing spray before noon. Mostly sunny. Seas around 1 ft.

Thursday Night

WNW wind 10 to 15 kt. Widespread freezing spray. Mostly clear. Seas around 1 ft.

Friday

W wind 10 to 15 kt. Widespread freezing spray. Mostly sunny. Seas around 1 ft.

Friday Night

WNW wind 5 to 10 kt. Widespread freezing spray. Partly cloudy. Seas around 1 ft.

Saturday

Variable winds 5 kt or less. Widespread freezing spray before 11am. Mostly sunny. Seas around 1 ft.

Saturday Night

NNE wind 5 to 10 kt increasing to 15 to 20 kt. Winds could gust as high as 30 kt. A chance of snow. Widespread freezing spray after 9pm. Seas 1 to 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.