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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Columbus Day
High: 67 °F
Light Wind
1-2ft
Tonight
Low: 51 °F
⇑ENE 15kt
2-3ft
Tuesday
High: 60 °F
ENE 10kt
3ft
Tuesday Night
Low: 57 °F
S 10kt
3ft
Wednesday
High: 66 °F
WNW 10kt
3ft
Wednesday Night
Low: 52 °F
Light Wind
2ft
Thursday
High: 60 °F
Light Wind
1-2ft
Thursday Night
Low: 49 °F
Light Wind
1ft
Friday
High: 60 °F
SSE 10kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:04 am EDT Oct 12, 2026
Forecast Valid: 6am EDT Oct 12, 2026-6pm EDT Oct 18, 2026

View Nearby Observations

Detailed Forecast

Columbus Day

Variable winds 5 kt or less. A slight chance of rain before 7am. Areas of fog before 10am. Seas 1 to 2 ft.

Tonight

NNW wind 5 to 8 kt becoming ENE 10 to 15 kt after midnight. Winds could gust as high as 20 kt. A chance of showers, mainly after 1am. Areas of fog after 2am. Seas 2 to 3 ft.

Tuesday

ENE wind around 10 kt becoming SE in the afternoon. Rain, mainly after 1pm. Areas of fog before 8am. Seas around 3 ft.

Tuesday Night

S wind around 10 kt becoming SW after midnight. Rain, mainly before 2am. Seas around 3 ft.

Wednesday

WNW wind 5 to 10 kt. Mostly sunny. Seas around 3 ft.

Wednesday Night

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

Thursday

Variable winds 5 kt or less. Sunny. Seas 1 to 2 ft.

Thursday Night

Variable winds 5 kt or less. A chance of showers. Seas around 1 ft.

Friday

SSE wind 5 to 10 kt. Showers. 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.