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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:Variable winds 5 kt or less. Mostly clear. Seas around 2 ft.

      Low: 58 °F

      Light Wind
      2ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming SSE 5 to 10 kt in the afternoon. Mostly sunny. Seas around 2 ft.

      High: 72 °F

      ⇑SSE 10kt
      2ft

    • Wednesday Night

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

      Low: 59 °F

      S 10kt
      2ft

    • Thursday

      Thursday:SSE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Showers, mainly after 8am. Patchy fog before 8am. Seas 1 ft building to 3 ft.

      High: 72 °F

      ⇑SSE 15kt
      Waves Building3ft

    • Thursday Night

      Thursday Night:SSW wind 10 to 15 kt becoming WSW after midnight. A chance of showers before 10pm. Seas 3 to 4 ft.

      Low: 62 °F

      SSW 15kt
      3-4ft

    • Juneteenth

      Juneteenth:WSW wind around 10 kt. Mostly sunny. Seas around 2 ft.

      High: 78 °F

      WSW 10kt
      2ft

    • Friday Night

      Friday Night:W wind around 10 kt. Mostly clear. Seas 1 to 2 ft.

      Low: 61 °F

      W 10kt
      1-2ft

    • Saturday

      Saturday:W wind around 10 kt. Sunny. Seas around 1 ft.

      High: 74 °F

      W 10kt
      1ft

    • Saturday Night

      Saturday Night:W wind around 10 kt. Mostly clear. Seas around 1 ft.

      Low: 60 °F

      W 10kt
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:35 pm EDT Jun 16, 2026
Forecast Valid: 9pm EDT Jun 16, 2026-6pm EDT Jun 23, 2026

View Nearby Observations

Detailed Forecast


Tonight
Variable winds 5 kt or less. Mostly clear. Seas around 2 ft.
Wednesday
Variable winds less than 5 kt becoming SSE 5 to 10 kt in the afternoon. Mostly sunny. Seas around 2 ft.
Wednesday Night
S wind 5 to 10 kt. A slight chance of showers after 5am. Patchy fog after 3am. Seas around 2 ft.
Thursday
SSE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Showers, mainly after 8am. Patchy fog before 8am. Seas 1 ft building to 3 ft.
Thursday Night
SSW wind 10 to 15 kt becoming WSW after midnight. A chance of showers before 10pm. Seas 3 to 4 ft.
Juneteenth
WSW wind around 10 kt. Mostly sunny. Seas around 2 ft.
Friday Night
W wind around 10 kt. Mostly clear. Seas 1 to 2 ft.
Saturday
W wind around 10 kt. Sunny. Seas around 1 ft.
Saturday Night
W wind around 10 kt. Mostly clear. 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: 7:35 pm EDT Jun 16, 2026
Forecast Valid: 9pm EDT Jun 16, 2026-6pm EDT Jun 23, 2026
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