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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:S wind around 10 kt. Mostly cloudy. Seas around 3 ft.

      High: 49 °F

      S 10kt
      3ft

    • Tonight

      Tonight:SSW wind 10 to 15 kt becoming WSW after midnight. Partly cloudy. Seas around 3 ft.

      Low: 51 °F

      SW 15kt
      3ft

    • Saturday

      Saturday:NNW wind 10 to 15 kt becoming E in the afternoon. Mostly sunny. Seas 2 to 3 ft.

      High: 48 °F

      ENE 15kt
      2-3ft

    • Saturday Night

      Saturday Night:SE wind around 10 kt. Showers likely, mainly after 5am.   Seas around 3 ft.

      Low: 38 °F

      SE 10kt
      3ft

    • Sunday

      Sunday:SSE wind 5 to 10 kt becoming SSW in the afternoon. Rain, mainly before 5pm.   Seas 3 to 4 ft.

      High: 52 °F

      SSW 10kt
      3-4ft

    • Sunday Night

      Sunday Night:W wind around 10 kt. A chance of rain before 8pm.   Seas 3 to 4 ft.

      Low: 39 °F

      W 10kt
      3-4ft

    • Monday

      Monday:W wind around 10 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 47 °F

      W 10kt
      2-3ft

    • Monday Night

      Monday Night:W wind 5 to 10 kt. Partly cloudy. Seas around 2 ft.

      Low: 34 °F

      W 10kt
      2ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. A chance of showers.   Seas around 1 ft.

      High: 45 °F

      Light Wind
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:30 pm EDT Apr 3, 2026
Forecast Valid: 3pm EDT Apr 3, 2026-6pm EDT Apr 10, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
S wind around 10 kt. Mostly cloudy. Seas around 3 ft.
Tonight
SSW wind 10 to 15 kt becoming WSW after midnight. Partly cloudy. Seas around 3 ft.
Saturday
NNW wind 10 to 15 kt becoming E in the afternoon. Mostly sunny. Seas 2 to 3 ft.
Saturday Night
SE wind around 10 kt. Showers likely, mainly after 5am. Seas around 3 ft.
Sunday
SSE wind 5 to 10 kt becoming SSW in the afternoon. Rain, mainly before 5pm. Seas 3 to 4 ft.
Sunday Night
W wind around 10 kt. A chance of rain before 8pm. Seas 3 to 4 ft.
Monday
W wind around 10 kt. Mostly sunny. Seas 2 to 3 ft.
Monday Night
W wind 5 to 10 kt. Partly cloudy. Seas around 2 ft.
Tuesday
Variable winds 5 kt or less. A chance of showers. Seas around 1 ft.

*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: 42.98°N 70.74°W
Last Update: 2:30 pm EDT Apr 3, 2026
Forecast Valid: 3pm EDT Apr 3, 2026-6pm EDT Apr 10, 2026
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