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Norton, MA Local Forecast Office

21NM E Portsmouth RI

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:WSW wind 18 to 21 kt decreasing to 15 to 18 kt in the morning. Winds could gust as high as 37 kt. A chance of showers, mainly before 9am.   Seas 6 ft subsiding to 4 ft.

      High: 77 °F

      WSW 21kt⇓
      6ftWaves Subsiding

    • Thursday Night

      Thursday Night:WSW wind 7 to 9 kt becoming NW after midnight. Partly cloudy. Seas around 2 ft.

      Low: 65 °F

      WSW 9kt
      2ft

    • Friday

      Friday:NNW wind 6 to 9 kt becoming W in the afternoon. Sunny. Seas 1 to 2 ft.

      High: 73 °F

      NNW 9kt
      1-2ft

    • Friday Night

      Friday Night:WSW wind around 6 kt becoming N after midnight. Clear. Seas around 1 ft.

      Low: 63 °F

      NW 6kt
      1ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. Sunny. Seas 1 to 2 ft.

      High: 71 °F

      ⇑S 7kt
      1-2ft

    • Saturday Night

      Saturday Night:S wind 8 to 11 kt. A slight chance of showers after 4am.   Seas 1 to 2 ft.

      Low: 67 °F

      S 11kt
      1-2ft

    • Sunday

      Sunday:S wind 11 to 13 kt. A chance of showers after 7am.   Seas around 2 ft.

      High: 73 °F

      S 13kt
      2ft

    • Sunday Night

      Sunday Night:SW wind 9 to 11 kt becoming W after midnight. Mostly cloudy. Seas around 1 ft.

      Low: 67 °F

      SW 11kt
      1ft

    • Monday

      Monday:NW wind 7 to 11 kt. Mostly sunny. Seas 1 to 2 ft.

      High: 74 °F

      NW 11kt
      1-2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:56 am EDT Sep 10, 2026
Forecast Valid: 2am EDT Sep 10, 2026-6pm EDT Sep 16, 2026

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Detailed Forecast

...GALE WARNING IN EFFECT UNTIL NOON EDT TODAY...

Thursday
WSW wind 18 to 21 kt decreasing to 15 to 18 kt in the morning. Winds could gust as high as 37 kt. A chance of showers, mainly before 9am. Seas 6 ft subsiding to 4 ft.
Thursday Night
WSW wind 7 to 9 kt becoming NW after midnight. Partly cloudy. Seas around 2 ft.
Friday
NNW wind 6 to 9 kt becoming W in the afternoon. Sunny. Seas 1 to 2 ft.
Friday Night
WSW wind around 6 kt becoming N after midnight. Clear. Seas around 1 ft.
Saturday
Variable winds less than 5 kt becoming S 5 to 7 kt in the afternoon. Sunny. Seas 1 to 2 ft.
Saturday Night
S wind 8 to 11 kt. A slight chance of showers after 4am. Seas 1 to 2 ft.
Sunday
S wind 11 to 13 kt. A chance of showers after 7am. Seas around 2 ft.
Sunday Night
SW wind 9 to 11 kt becoming W after midnight. Mostly cloudy. Seas around 1 ft.
Monday
NW wind 7 to 11 kt. Mostly sunny. Seas 1 to 2 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:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 41.57°N 70.78°W
Last Update: 1:56 am EDT Sep 10, 2026
Forecast Valid: 2am EDT Sep 10, 2026-6pm EDT Sep 16, 2026
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