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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SE wind around 10 kt. Sunny. Seas around 2 ft.

      High: 71 °F

      SE 10kt
      2ft

    • Tonight

      Tonight:S wind 5 to 10 kt. A chance of showers after 5am.  Patchy fog after 3am.  Seas around 2 ft.

      Low: 59 °F

      S 10kt
      2ft

    • Thursday

      Thursday:SSE wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Showers, with thunderstorms also possible after 2pm.  Patchy fog before 8am.  Seas 2 ft building to 4 ft.

      High: 72 °F

      ⇑SSE 20kt
      Waves Building4ft

    • Thursday Night

      Thursday Night:S wind around 10 kt becoming W after midnight. Showers likely before 8pm.   Seas 4 to 5 ft.

      Low: 61 °F

      S 10kt
      4-5ft

    • Juneteenth

      Juneteenth:WSW wind around 10 kt. Sunny. Seas 2 to 3 ft.

      High: 77 °F

      WSW 10kt
      2-3ft

    • Friday Night

      Friday Night:W wind around 10 kt. Clear. Seas around 2 ft.

      Low: 61 °F

      W 10kt
      2ft

    • Saturday

      Saturday:WNW wind 10 to 15 kt. Sunny. Seas 1 to 2 ft.

      High: 75 °F

      WNW 15kt
      1-2ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

      Low: 60 °F

      Light Wind
      1ft

    • Sunday

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

      High: 74 °F

      Light Wind
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:26 pm EDT Jun 17, 2026
Forecast Valid: 3pm EDT Jun 17, 2026-6pm EDT Jun 24, 2026

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Detailed Forecast


This Afternoon
SE wind around 10 kt. Sunny. Seas around 2 ft.
Tonight
S wind 5 to 10 kt. A chance of showers after 5am. Patchy fog after 3am. Seas around 2 ft.
Thursday
SSE wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Showers, with thunderstorms also possible after 2pm. Patchy fog before 8am. Seas 2 ft building to 4 ft.
Thursday Night
S wind around 10 kt becoming W after midnight. Showers likely before 8pm. Seas 4 to 5 ft.
Juneteenth
WSW wind around 10 kt. Sunny. Seas 2 to 3 ft.
Friday Night
W wind around 10 kt. Clear. Seas around 2 ft.
Saturday
WNW wind 10 to 15 kt. Sunny. Seas 1 to 2 ft.
Saturday Night
Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.
Sunday
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: 2:26 pm EDT Jun 17, 2026
Forecast Valid: 3pm EDT Jun 17, 2026-6pm EDT Jun 24, 2026
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