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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SSW wind around 10 kt, with gusts as high as 20 kt. Cloudy. Seas 1 ft or less.

      High: 45 °F

      SSW 10kt
      < 1ft

    • Tonight

      Tonight:SSW wind around 15 kt, with gusts as high as 25 kt. A chance of rain between midnight and 4am.   Seas 1 ft or less.

      Low: 43 °F

      SSW 15kt
      < 1ft

    • Sunday

      Sunday:SW wind around 10 kt becoming W in the afternoon. Winds could gust as high as 20 kt. Cloudy, then gradual clearing during the afternoon. Seas 1 ft or less.

      High: 54 °F

      SW 10kt
      < 1ft

    • Sunday Night

      Sunday Night:WSW wind around 10 kt. Mostly clear. Seas 1 ft or less.

      Low: 39 °F

      WSW 10kt
      < 1ft

    • Monday

      Monday:SSW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 1 ft or less.

      High: 55 °F

      SSW 15kt
      < 1ft

    • Monday Night

      Monday Night:SW wind 10 to 15 kt, with gusts as high as 25 kt. Clear. Seas 1 ft or less.

      Low: 41 °F

      SW 15kt
      < 1ft

    • Tuesday

      Tuesday:WSW wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas 1 ft or less.

      High: 60 °F

      SSW 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Low: 39 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:E wind around 10 kt becoming SE in the afternoon. A chance of rain.   Seas 1 ft or less.

      High: 50 °F

      E 10kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:27 pm EST Mar 7, 2026
Forecast Valid: 1pm EST Mar 7, 2026-6pm EDT Mar 13, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
SSW wind around 10 kt, with gusts as high as 20 kt. Cloudy. Seas 1 ft or less.
Tonight
SSW wind around 15 kt, with gusts as high as 25 kt. A chance of rain between midnight and 4am. Seas 1 ft or less.
Sunday
SW wind around 10 kt becoming W in the afternoon. Winds could gust as high as 20 kt. Cloudy, then gradual clearing during the afternoon. Seas 1 ft or less.
Sunday Night
WSW wind around 10 kt. Mostly clear. Seas 1 ft or less.
Monday
SSW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 1 ft or less.
Monday Night
SW wind 10 to 15 kt, with gusts as high as 25 kt. Clear. Seas 1 ft or less.
Tuesday
WSW wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Wednesday
E wind around 10 kt becoming SE in the afternoon. A chance of rain. Seas 1 ft or less.

*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: 43.02°N 70.73°W
Last Update: 1:27 pm EST Mar 7, 2026
Forecast Valid: 1pm EST Mar 7, 2026-6pm EDT Mar 13, 2026
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