For More Weather Information:

Norton, MA Local Forecast Office

6NM WNW Portsmouth RI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 79 °F
SSW 19kt
3ft
Tonight
Low: 68 °F
SW 18kt
2-3ft
Sunday
High: 79 °F
NW 13kt
2ft
Sunday Night
Low: 62 °F
NNW 8kt
1ft
Monday
High: 78 °F
⇑S 10kt
1ft
Monday Night
Low: 64 °F
SSW 10kt
1ft
Tuesday
High: 77 °F
⇑SSE 15kt
1-2ft
Tuesday Night
Low: 68 °F
SSE 18kt
2-3ft
Wednesday
High: 76 °F
SSW 20kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:30 pm EDT Jul 18, 2026
Forecast Valid: 2pm EDT Jul 18, 2026-6pm EDT Jul 24, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

This Afternoon

SSW wind around 19 kt. Showers and possibly a thunderstorm. Widespread smoke. Seas around 3 ft.

Tonight

SW wind 14 to 18 kt. Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 2am, then a slight chance of showers after 2am. Some of the storms could produce heavy rainfall. Widespread smoke, mainly before 8pm. Seas 2 to 3 ft.

Sunday

NW wind 11 to 13 kt. Sunny. Seas around 2 ft.

Sunday Night

NNW wind 5 to 8 kt. Mostly clear. Seas around 1 ft.

Monday

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

Monday Night

SSW wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.

Tuesday

SSE wind 8 to 11 kt increasing to 12 to 15 kt in the afternoon. A chance of showers after 2pm. Seas 1 to 2 ft.

Tuesday Night

SSE wind 13 to 18 kt. Showers and possibly a thunderstorm. Seas 2 to 3 ft.

Wednesday

SSW wind 17 to 20 kt, with gusts as high as 26 kt. Showers, with thunderstorms also possible after 2pm. Seas around 3 ft.

Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.

*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.