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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 40 °F
SW 10kt
3ft
Tuesday
High: 62 °F
Light Wind
2ft
Tuesday Night
Low: 38 °F
Light Wind
2ft
Wednesday
High: 41 °F
NE 10kt
2-3ft
Wednesday Night
Low: 38 °F
SSW 15kt
3ft
Thursday
High: 54 °F
W 15kt
3-4ft
Thursday Night
Low: 28 °F
WNW 15kt
2ft
Friday
High: 41 °F
SSW 10kt
2ft
Friday Night
Low: 34 °F
S 15kt
3-4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:28 pm EDT Mar 9, 2026
Forecast Valid: 6pm EDT Mar 9, 2026-6pm EDT Mar 16, 2026

View Nearby Observations

Detailed Forecast

Tonight

SW wind around 10 kt. Mostly clear. Seas around 3 ft.

Tuesday

Variable winds 5 kt or less. Sunny. Seas around 2 ft.

Tuesday Night

Variable winds 5 kt or less. Patchy fog. Seas around 2 ft.

Wednesday

NE wind around 10 kt. A chance of rain. Patchy fog. Seas 2 to 3 ft.

Wednesday Night

SSE wind 10 to 15 kt becoming SSW after midnight. A chance of rain. Patchy fog. Seas around 3 ft.

Thursday

SW wind around 15 kt becoming W in the afternoon. A chance of rain. Patchy fog before noon. Seas 3 to 4 ft.

Thursday Night

WNW wind around 15 kt, with gusts as high as 20 kt. A chance of rain and snow before 10pm. Seas around 2 ft.

Friday

WNW wind around 10 kt becoming SSW in the afternoon. Mostly sunny. Seas around 2 ft.

Friday Night

S wind around 15 kt, with gusts as high as 20 kt. A chance of snow before 11pm, then rain and snow likely between 11pm and 5am, then rain likely after 5am. 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.