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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:Variable winds 5 kt or less. Showers likely, mainly after 5am.  Patchy fog.  Seas around 1 ft.

      Low: 44 °F

      Light Wind
      1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. A chance of showers, with thunderstorms also possible after 2pm.  Areas of fog before 3pm.  Seas around 1 ft.

      High: 56 °F

      Light Wind
      1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms.   Seas around 1 ft.

      Low: 48 °F

      Light Wind
      1ft

    • Friday

      Friday:Variable winds 5 kt or less. A chance of showers after 8am.   Seas around 1 ft.

      High: 57 °F

      Light Wind
      1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. A chance of showers before 9pm.   Seas around 1 ft.

      Low: 46 °F

      Light Wind
      1ft

    • Saturday

      Saturday:Variable winds 5 kt or less. Mostly cloudy. Seas 1 to 2 ft.

      High: 49 °F

      Light Wind
      1-2ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. A chance of showers after 2am.   Seas 1 to 2 ft.

      Low: 45 °F

      Light Wind
      1-2ft

    • Sunday

      Sunday:S wind 5 to 10 kt becoming W in the afternoon. Showers likely.   Seas around 2 ft.

      High: 53 °F

      W 10kt
      2ft

    • Sunday Night

      Sunday Night:W wind around 10 kt. A chance of rain showers before 2am, then a chance of rain and snow showers between 2am and 4am, then a chance of snow showers after 4am.   Seas around 2 ft.

      Low: 37 °F

      W 10kt
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:34 pm EDT Apr 15, 2026
Forecast Valid: 12am EDT Apr 16, 2026-6pm EDT Apr 22, 2026

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Detailed Forecast


Overnight
Variable winds 5 kt or less. Showers likely, mainly after 5am. Patchy fog. Seas around 1 ft.
Thursday
Variable winds 5 kt or less. A chance of showers, with thunderstorms also possible after 2pm. Areas of fog before 3pm. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas around 1 ft.
Friday
Variable winds 5 kt or less. A chance of showers after 8am. Seas around 1 ft.
Friday Night
Variable winds 5 kt or less. A chance of showers before 9pm. Seas around 1 ft.
Saturday
Variable winds 5 kt or less. Mostly cloudy. Seas 1 to 2 ft.
Saturday Night
Variable winds 5 kt or less. A chance of showers after 2am. Seas 1 to 2 ft.
Sunday
S wind 5 to 10 kt becoming W in the afternoon. Showers likely. Seas around 2 ft.
Sunday Night
W wind around 10 kt. A chance of rain showers before 2am, then a chance of rain and snow showers between 2am and 4am, then a chance of snow showers after 4am. Seas around 2 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: 6:34 pm EDT Apr 15, 2026
Forecast Valid: 12am EDT Apr 16, 2026-6pm EDT Apr 22, 2026
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