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Gray/Portland, ME Local Forecast Office

10NM S Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds 5 kt or less. Isolated showers, mainly between 4pm and 5pm.   Seas 1 to 2 ft.

      High: 69 °F

      Light Wind
      1-2ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Isolated showers and thunderstorms before 8pm, then isolated showers after 1am.   Seas around 1 ft.

      Low: 65 °F

      Light Wind
      1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. Scattered showers, with thunderstorms also possible after 5pm.   Seas around 1 ft.

      High: 68 °F

      Light Wind
      1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Scattered showers before 2am.   Seas around 1 ft.

      Low: 64 °F

      Light Wind
      1ft

    • Friday

      Friday:Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.

      High: 73 °F

      Light Wind
      1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

      Low: 65 °F

      Light Wind
      2ft

    • Saturday

      Saturday:Variable winds 5 kt or less. Partly sunny. Seas around 2 ft.

      High: 75 °F

      Light Wind
      2ft

    • Saturday Night

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

      Low: 66 °F

      Light Wind
      1-2ft

    • Sunday

      Sunday:SSE wind 5 to 10 kt. Partly sunny. Seas around 1 ft.

      High: 77 °F

      SSE 10kt
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:17 am EDT Jul 9, 2025
Forecast Valid: 10am EDT Jul 9, 2025-6pm EDT Jul 15, 2025

View Nearby Observations

Detailed Forecast


Today
Variable winds 5 kt or less. Isolated showers, mainly between 4pm and 5pm. Seas 1 to 2 ft.
Tonight
Variable winds 5 kt or less. Isolated showers and thunderstorms before 8pm, then isolated showers after 1am. Seas around 1 ft.
Thursday
Variable winds 5 kt or less. Scattered showers, with thunderstorms also possible after 5pm. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. Scattered showers before 2am. Seas around 1 ft.
Friday
Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.
Friday Night
Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.
Saturday
Variable winds 5 kt or less. Partly sunny. Seas around 2 ft.
Saturday Night
Variable winds 5 kt or less. Mostly cloudy. Seas 1 to 2 ft.
Sunday
SSE wind 5 to 10 kt. Partly sunny. 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: 42.9°N 70.79°W
Last Update: 5:17 am EDT Jul 9, 2025
Forecast Valid: 10am EDT Jul 9, 2025-6pm EDT Jul 15, 2025
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