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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 35 °F
S 10kt
< 1ft
Tonight
Low: 32 °F
SSE 10kt
< 1ft
Wednesday
High: 47 °F
W 10kt
< 1ft
Wednesday Night
Low: 30 °F
Light Wind
< 1ft
Thursday
High: 41 °F
ENE 10kt
< 1ft
Thursday Night
Low: 34 °F
ENE 15kt
< 1ft
Friday
High: 38 °F
NE 15kt
< 1ft
Friday Night
Low: 35 °F
Light Wind
< 1ft
Saturday
High: 50 °F
S 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:31 pm EST Mar 3, 2026
Forecast Valid: 5pm EST Mar 3, 2026-6pm EDT Mar 10, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

S wind around 10 kt. Snow. Seas 1 ft or less.

Tonight

SSE wind 5 to 10 kt becoming WNW after midnight. Rain and snow, possibly mixed with sleet before 2am, then a slight chance of rain between 2am and 3am. Seas 1 ft or less.

Wednesday

W wind 5 to 10 kt. Sunny. Seas 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Thursday

NNE wind 5 to 10 kt becoming ENE in the afternoon. A chance of rain after 4pm. Seas 1 ft or less.

Thursday Night

ENE wind 10 to 15 kt, with gusts as high as 25 kt. A chance of rain before 11pm, then rain and snow. Seas 1 ft or less.

Friday

NE wind 10 to 15 kt, with gusts as high as 25 kt. Rain and snow likely, mainly before 11am. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. Cloudy. Seas 1 ft or less.

Saturday

S wind 5 to 10 kt. Mostly cloudy. 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.