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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Overnight
Low: 42 °F
SW 10kt
2ft
Tuesday
High: 45 °F
NE 10kt
1-2ft
Tuesday Night
Low: 38 °F
W 10kt
2ft
Wednesday
High: 53 °F
SSW 10kt
3ft
Wednesday Night
Low: 36 °F
NE 10kt
2ft
Thursday
High: 39 °F
ENE 10kt
2-3ft
Thursday Night
Low: 37 °F
E 10kt
3ft
Friday
High: 57 °F
Light Wind
3ft
Friday Night
Low: 44 °F
SW 10kt
3-4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:28 pm EDT Mar 30, 2026
Forecast Valid: 11pm EDT Mar 30, 2026-6pm EDT Apr 6, 2026

View Nearby Observations

Detailed Forecast

Overnight

SW wind 5 to 10 kt. A chance of rain, mainly after 4am. Seas around 2 ft.

Tuesday

NE wind 5 to 10 kt. Rain likely, mainly between 7am and 1pm. Seas 1 to 2 ft.

Tuesday Night

NE wind around 10 kt becoming W after midnight. Rain likely and possibly a thunderstorm. Seas around 2 ft.

Wednesday

SSW wind around 10 kt becoming NNW in the afternoon. Rain likely, mainly after 3pm. Seas around 3 ft.

Wednesday Night

NE wind around 10 kt. Rain likely, mainly before 8pm. Seas around 2 ft.

Thursday

ENE wind around 10 kt. A chance of rain before 1pm, then a chance of rain and snow between 1pm and 5pm, then a chance of rain after 5pm. Seas 2 to 3 ft.

Thursday Night

E wind around 10 kt. A chance of rain before 8pm, then a chance of rain and snow between 8pm and 11pm, then a chance of rain after 11pm. Seas around 3 ft.

Friday

Variable winds 5 kt or less. A chance of rain. Seas around 3 ft.

Friday Night

SW wind around 10 kt. A chance of rain. Seas 3 to 4 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.