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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 41 °F
SSE 15kt
2-3ft
Tonight
Low: 33 °F
⇑N 20kt
2-3ft
Monday
High: 37 °F
NNE 20kt
3ft
Monday Night
Low: 32 °F
N 15kt
2-3ft
Tuesday
High: 39 °F
NNW 10kt
2ft
Tuesday Night
Low: 36 °F
SW 15kt
4ft
Wednesday
High: 43 °F
SW 20kt
3ft
Wednesday Night
Low: 35 °F
WSW 15kt
2-3ft
Thursday
High: 46 °F
S 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:30 am EDT Mar 22, 2026
Forecast Valid: 11am EDT Mar 22, 2026-6pm EDT Mar 28, 2026

View Nearby Observations

Detailed Forecast

Today

SSE wind around 15 kt, with gusts as high as 25 kt. Rain, possibly mixed with snow, becoming all rain after noon. Seas 2 to 3 ft.

Tonight

N wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Winds could gust as high as 25 kt. Rain likely before 5am, then rain likely, possibly mixed with snow. Seas 2 to 3 ft.

Monday

NNE wind 15 to 20 kt, with gusts as high as 30 kt. A slight chance of snow before 7am, then a chance of snow after 8am. Seas around 3 ft.

Monday Night

N wind around 15 kt. A chance of snow before 10pm. Seas 2 to 3 ft.

Tuesday

NNW wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas around 2 ft.

Tuesday Night

SW wind around 15 kt, with gusts as high as 25 kt. Mostly cloudy. Seas 2 ft building to 4 ft.

Wednesday

SW wind 15 to 20 kt. Partly sunny. Seas around 3 ft.

Wednesday Night

WSW wind around 15 kt, with gusts as high as 20 kt. Mostly cloudy. Seas 2 to 3 ft.

Thursday

S wind 10 to 15 kt. A chance of rain before 8am, then a chance of rain and snow. Seas around 2 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.