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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Wednesday
High: 67 °F
⇑SSE 10kt
< 1ft
Wednesday Night
Low: 57 °F
SSE 10kt
< 1ft
Thursday
High: 67 °F
⇑SSE 10kt
< 1ft
Thursday Night
Low: 62 °F
S 10kt
< 1ft
Friday
High: 71 °F
S 15kt
< 1ft
Friday Night
Low: 66 °F
SSW 15kt
< 1ft
Saturday
High: 73 °F
S 10kt
< 1ft
Saturday Night
Low: 59 °F
WSW 10kt
< 1ft
Sunday
High: 66 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:33 am EDT Sep 3, 2025
Forecast Valid: 4am EDT Sep 3, 2025-6pm EDT Sep 9, 2025

View Nearby Observations

Detailed Forecast

Wednesday

Variable winds less than 5 kt becoming SSE 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Wednesday Night

SSE wind 5 to 10 kt becoming SSW after midnight. Partly cloudy. Seas 1 ft or less.

Thursday

SSW wind 5 to 8 kt becoming SSE 7 to 10 kt in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas 1 ft or less.

Thursday Night

S wind around 10 kt, with gusts as high as 20 kt. A chance of showers after 3am. Seas 1 ft or less.

Friday

S wind 10 to 15 kt, with gusts as high as 25 kt. A chance of showers before 10am. Seas 1 ft or less.

Friday Night

SSW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly clear. Seas 1 ft or less.

Saturday

S wind around 10 kt, with gusts as high as 20 kt. A chance of showers between noon and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Saturday Night

WSW wind 5 to 10 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. A chance of showers. 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.