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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 38 °F
ENE 15kt
< 1ft
Tonight
Low: 30 °F
ENE 15kt
< 1ft
Friday
High: 36 °F
NE 15kt
< 1ft
Friday Night
Low: 35 °F
ENE 10kt
< 1ft
Saturday
High: 47 °F
⇑SSW 15kt
< 1ft
Saturday Night
Low: 44 °F
SW 15kt
< 1ft
Sunday
High: 52 °F
W 10kt
< 1ft
Sunday Night
Low: 37 °F
WSW 10kt
< 1ft
Monday
High: 54 °F
SW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:11 am EST Mar 5, 2026
Forecast Valid: 9am EST Mar 5, 2026-6pm EDT Mar 11, 2026

View Nearby Observations

Detailed Forecast

Today

ENE wind 10 to 15 kt, with gusts as high as 25 kt. A slight chance of snow after 4pm. Seas 1 ft or less.

Tonight

ENE wind around 15 kt, with gusts as high as 25 kt. Snow, possibly mixed with sleet, becoming all snow after 5am. Seas 1 ft or less.

Friday

NE wind 10 to 15 kt, with gusts as high as 25 kt. Snow, possibly mixed with sleet before 10am, then a chance of snow between 10am and 4pm, then a slight chance of rain after 4pm. Seas 1 ft or less.

Friday Night

ENE wind 5 to 10 kt becoming SSE after midnight. Cloudy. Seas 1 ft or less.

Saturday

SSW wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Cloudy. Seas 1 ft or less.

Saturday Night

SW wind around 15 kt, with gusts as high as 30 kt. A chance of rain. Seas 1 ft or less.

Sunday

W wind around 10 kt, with gusts as high as 20 kt. Partly sunny. Seas 1 ft or less.

Sunday Night

WSW wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.

Monday

SW wind around 10 kt. Sunny. Seas 1 ft or less.

*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.