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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tuesday
High: 30 °F
WNW 15kt
< 1ft
Tuesday Night
Low: 16 °F
WNW 10kt
< 1ft
Wednesday
High: 38 °F
SSW 10kt
< 1ft
Wednesday Night
Low: 29 °F
WSW 10kt
< 1ft
Thursday
High: 39 °F
W 10kt
< 1ft
Thursday Night
Low: 24 °F
NNW 10kt
< 1ft
Friday
High: 37 °F
NNW 10kt
< 1ft
Friday Night
Low: 27 °F
Light Wind
< 1ft
Saturday
High: 43 °F
SSW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:24 am EST Feb 24, 2026
Forecast Valid: 3am EST Feb 24, 2026-6pm EST Mar 2, 2026

View Nearby Observations

Detailed Forecast

Tuesday

WNW wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 1 ft or less.

Tuesday Night

WNW wind 5 to 10 kt becoming SW after midnight. Winds could gust as high as 20 kt. A slight chance of snow after 5am. Seas 1 ft or less.

Wednesday

SSW wind around 10 kt, with gusts as high as 20 kt. Snow, possibly mixed with rain before 2pm, then a chance of snow between 2pm and 4pm, then a chance of rain after 4pm. Seas 1 ft or less.

Wednesday Night

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

Thursday

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

Thursday Night

W wind around 10 kt becoming NNW after midnight. A chance of snow after 7pm. Seas 1 ft or less.

Friday

NNW wind 5 to 10 kt becoming WSW in the afternoon. Mostly sunny. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Saturday

SSW wind around 10 kt, with gusts as high as 20 kt. Mostly 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.