For More Weather Information:

Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 36 °F
SW 15kt
2-3ft
Tonight
Low: 30 °F
SW 20kt
3ft
Thursday
High: 41 °F
SW 20kt
3ft
Thursday Night
Low: 26 °F
W 20kt
3ft
Friday
High: 30 °F
⇑WSW 25kt
2-3ft
Friday Night
Low: 8 °F
WNW 25kt
3ft
Saturday
High: 13 °F
WNW 20kt
2-3ft
Saturday Night
Low: 7 °F
NW 20kt⇓
2ft
Sunday
High: 19 °F
N 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:32 am EST Jan 21, 2026
Forecast Valid: 11am EST Jan 21, 2026-6pm EST Jan 27, 2026

View Nearby Observations

Detailed Forecast

Today

SW wind around 15 kt, with gusts as high as 25 kt. A slight chance of snow after 5pm. Widespread freezing spray before 1pm. Seas 2 to 3 ft.

Tonight

SW wind around 20 kt, with gusts as high as 25 kt. Snow likely before midnight, then a chance of rain and snow between midnight and 1am, then a chance of snow after 1am. Seas around 3 ft.

Thursday

SW wind around 20 kt. A slight chance of rain and snow showers before 7am, then a slight chance of rain between 7am and 8am. Seas around 3 ft.

Thursday Night

W wind around 20 kt, with gusts as high as 25 kt. Partly cloudy. Seas around 3 ft.

Friday

WSW wind 15 to 20 kt increasing to 20 to 25 kt in the afternoon. Winds could gust as high as 30 kt. Partly sunny. Seas 2 to 3 ft.

Friday Night

WNW wind around 25 kt, with gusts as high as 35 kt. Widespread freezing spray after 8pm. Partly cloudy. Seas around 3 ft.

Saturday

WNW wind around 20 kt, with gusts as high as 30 kt. Widespread freezing spray. Sunny. Seas 2 to 3 ft.

Saturday Night

NW wind 17 to 20 kt decreasing to 15 to 18 kt after midnight. Winds could gust as high as 25 kt. Widespread freezing spray. Mostly cloudy. Seas around 2 ft.

Sunday

N wind 10 to 15 kt. A chance of snow showers. Widespread freezing spray. 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.