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Gray/Portland, ME Local Forecast Office

5NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NW wind around 15 kt. Sunny. Seas around 3 ft.

      High: 63 °F

      NW 15kt
      3ft

    • Tonight

      Tonight:NW wind 7 to 10 kt decreasing to 5 to 8 kt after midnight. Clear. Seas 2 to 3 ft.

      Low: 44 °F

      NW 10kt⇓
      2-3ft

    • Monday

      Monday:WSW wind 5 to 8 kt becoming S 7 to 10 kt in the morning. Sunny. Seas around 2 ft.

      High: 65 °F

      ⇑S 10kt
      2ft

    • Monday Night

      Monday Night:SW wind 5 to 10 kt becoming WNW after midnight. Partly cloudy. Seas around 2 ft.

      Low: 50 °F

      SW 10kt
      2ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Mostly sunny. Seas 1 to 2 ft.

      High: 57 °F

      Light Wind
      1-2ft

    • Tuesday Night

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

      Low: 48 °F

      Light Wind
      1ft

    • Wednesday

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

      High: 59 °F

      Light Wind
      1ft

    • Wednesday Night

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

      Low: 53 °F

      Light Wind
      1ft

    • Thursday

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

      High: 60 °F

      Light Wind
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:32 pm EDT May 11, 2025
Forecast Valid: 2pm EDT May 11, 2025-6pm EDT May 17, 2025

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Detailed Forecast


This Afternoon
NW wind around 15 kt. Sunny. Seas around 3 ft.
Tonight
NW wind 7 to 10 kt decreasing to 5 to 8 kt after midnight. Clear. Seas 2 to 3 ft.
Monday
WSW wind 5 to 8 kt becoming S 7 to 10 kt in the morning. Sunny. Seas around 2 ft.
Monday Night
SW wind 5 to 10 kt becoming WNW after midnight. Partly cloudy. Seas around 2 ft.
Tuesday
Variable winds 5 kt or less. Mostly sunny. Seas 1 to 2 ft.
Tuesday Night
Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.
Wednesday
Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.
Wednesday Night
Variable winds 5 kt or less. A chance of showers. Seas around 1 ft.
Thursday
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: 2:32 pm EDT May 11, 2025
Forecast Valid: 2pm EDT May 11, 2025-6pm EDT May 17, 2025
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