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Gray/Portland, ME Local Forecast Office

18NM NNE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Today

      Today:WSW wind 10 to 15 km/h becoming S 15 to 20 km/h in the afternoon. Winds could gust as high as 35 km/h. Increasing clouds. Seas 1 m or less.

      High: 13 °C

      ⇑S 20km/h
      < 1m

    • Tonight

      Tonight:S wind 15 to 20 km/h, with gusts as high as 35 km/h. Rain likely, mainly between 10pm and 1am.   Seas 1 m or less.

      Low: 7 °C

      S 20km/h
      < 1m

    • Saturday

      Saturday:WSW wind 10 to 15 km/h becoming WNW in the afternoon. A slight chance of showers, mainly between 11am and noon.   Seas 1 m or less.

      High: 17 °C

      WSW 15km/h
      < 1m

    • Saturday Night

      Saturday Night:NW wind 5 to 10 km/h becoming NNE after midnight. Partly cloudy. Seas 1 m or less.

      Low: 2 °C

      NW 10km/h
      < 1m

    • Sunday

      Sunday:NE wind 5 to 8 km/h becoming E 10 to 15 km/h in the morning. A chance of rain after 2pm.   Seas 1 m or less.

      High: 12 °C

      ⇑E 15km/h
      < 1m

    • Sunday Night

      Sunday Night:E wind 10 to 15 km/h becoming ENE after midnight. Rain.   Seas 1 m or less.

      Low: 8 °C

      ENE 15km/h
      < 1m

    • Monday

      Monday:NE wind around 15 km/h becoming WNW in the afternoon. Showers, mainly before 4pm.   Seas 1 m or less.

      High: 13 °C

      N 15km/h
      < 1m

    • Monday Night

      Monday Night:W wind 10 to 15 km/h. A chance of showers.   Seas 1 m or less.

      Low: -1 °C

      W 15km/h
      < 1m

    • Veterans Day

      Veterans Day:W wind 15 to 20 km/h increasing to 20 to 25 km/h in the afternoon. Winds could gust as high as 40 km/h. Mostly sunny. Seas 1 m or less.

      High: 8 °C

      ⇑W 25km/h
      < 1m


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:12 am EST Nov 7, 2025
Forecast Valid: 10am EST Nov 7, 2025-6pm EST Nov 13, 2025

View Nearby Observations

Detailed Forecast


Today
WSW wind 10 to 15 km/h becoming S 15 to 20 km/h in the afternoon. Winds could gust as high as 35 km/h. Increasing clouds. Seas 1 m or less.
Tonight
S wind 15 to 20 km/h, with gusts as high as 35 km/h. Rain likely, mainly between 10pm and 1am. Seas 1 m or less.
Saturday
WSW wind 10 to 15 km/h becoming WNW in the afternoon. A slight chance of showers, mainly between 11am and noon. Seas 1 m or less.
Saturday Night
NW wind 5 to 10 km/h becoming NNE after midnight. Partly cloudy. Seas 1 m or less.
Sunday
NE wind 5 to 8 km/h becoming E 10 to 15 km/h in the morning. A chance of rain after 2pm. Seas 1 m or less.
Sunday Night
E wind 10 to 15 km/h becoming ENE after midnight. Rain. Seas 1 m or less.
Monday
NE wind around 15 km/h becoming WNW in the afternoon. Showers, mainly before 4pm. Seas 1 m or less.
Monday Night
W wind 10 to 15 km/h. A chance of showers. Seas 1 m or less.
Veterans Day
W wind 15 to 20 km/h increasing to 20 to 25 km/h in the afternoon. Winds could gust as high as 40 km/h. Mostly sunny. Seas 1 m 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: 43.31°N 70.57°W
Last Update: 6:12 am EST Nov 7, 2025
Forecast Valid: 10am EST Nov 7, 2025-6pm EST Nov 13, 2025
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