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Norton, MA Local Forecast Office

3NM SSE Portsmouth RI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 45 °F
E 10kt
2ft
Tonight
Low: 34 °F
N 15kt
2-3ft
Wednesday
High: 42 °F
NNW 10kt⇓
3ft
Wednesday Night
Low: 34 °F
⇑WSW 8kt
1-2ft
Thursday
High: 42 °F
⇑WNW 15kt
3ft
Thursday Night
Low: 18 °F
NW 17kt⇓
3ft
Friday
High: 34 °F
SW 8kt
1-2ft
Friday Night
Low: 29 °F
Light Wind
1ft
Saturday
High: 41 °F
⇑WNW 7kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:18 pm EST Dec 2, 2025
Forecast Valid: 3pm EST Dec 2, 2025-6pm EST Dec 9, 2025

View Nearby Observations

Detailed Forecast

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

This Afternoon

E wind 8 to 10 kt. Rain. Seas around 2 ft.

Tonight

ENE wind 10 to 15 kt becoming NNW after midnight. Winds could gust as high as 30 kt. Rain before 4am, then a slight chance of rain after 5am. Seas 2 to 3 ft.

Wednesday

NNW wind 5 to 10 kt becoming variable and less than 5 kt in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas 3 ft subsiding to 1 ft.

Wednesday Night

Variable winds less than 5 kt becoming WSW 5 to 8 kt in the evening. Partly cloudy. Seas 1 to 2 ft.

Thursday

WSW wind 9 to 12 kt becoming WNW 12 to 15 kt in the afternoon. Winds could gust as high as 29 kt. A slight chance of showers after 4pm. Seas around 3 ft.

Thursday Night

NW wind 14 to 17 kt decreasing to 9 to 12 kt after midnight. Winds could gust as high as 31 kt. Mostly clear. Seas around 3 ft.

Friday

NW wind 6 to 8 kt becoming SW in the afternoon. Sunny. Seas 1 to 2 ft.

Friday Night

Variable winds 5 kt or less. A chance of rain and snow before midnight, then a chance of snow between midnight and 2am, then a chance of rain and snow after 2am. Seas around 1 ft.

Saturday

Variable winds less than 5 kt becoming WNW 5 to 7 kt in the morning. A chance of rain and snow before 9am, then a chance of rain. Seas around 1 ft.

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.