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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Wednesday

      Wednesday:Variable winds 5 kt or less. Sunny. Seas 2 to 3 ft.

      High: 47 °F

      Light Wind
      2-3ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Partly cloudy. Seas 2 to 3 ft.

      Low: 30 °F

      Light Wind
      2-3ft

    • Thursday

      Thursday:N wind 5 to 8 kt becoming ENE 7 to 10 kt in the afternoon. A slight chance of rain after 4pm.   Seas around 2 ft.

      High: 37 °F

      ⇑ENE 10kt
      2ft

    • Thursday Night

      Thursday Night:ENE wind around 15 kt. Rain, snow, and sleet likely before 1am, then snow and sleet likely between 1am and 2am, then rain, snow, and sleet after 2am.   Seas 2 to 3 ft.

      Low: 33 °F

      ENE 15kt
      2-3ft

    • Friday

      Friday:ENE wind 10 to 15 kt. Rain, snow, and sleet before noon, then a chance of rain and sleet between noon and 1pm.   Seas 3 to 4 ft.

      High: 37 °F

      ENE 15kt
      3-4ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Cloudy. Seas 4 to 5 ft.

      Low: 35 °F

      Light Wind
      4-5ft

    • Saturday

      Saturday:SSW wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. Mostly cloudy. Seas around 5 ft.

      High: 50 °F

      ⇑SSW 10kt
      5ft

    • Saturday Night

      Saturday Night:SSW wind 10 to 15 kt becoming W after midnight. A chance of rain.   Seas around 5 ft.

      Low: 42 °F

      SSW 15kt
      5ft

    • Sunday

      Sunday:W wind 5 to 10 kt. Mostly sunny. Seas 3 to 4 ft.

      High: 50 °F

      W 10kt
      3-4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:48 am EST Mar 4, 2026
Forecast Valid: 2am EST Mar 4, 2026-6pm EDT Mar 10, 2026

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Detailed Forecast


Wednesday
Variable winds 5 kt or less. Sunny. Seas 2 to 3 ft.
Wednesday Night
Variable winds 5 kt or less. Partly cloudy. Seas 2 to 3 ft.
Thursday
N wind 5 to 8 kt becoming ENE 7 to 10 kt in the afternoon. A slight chance of rain after 4pm. Seas around 2 ft.
Thursday Night
ENE wind around 15 kt. Rain, snow, and sleet likely before 1am, then snow and sleet likely between 1am and 2am, then rain, snow, and sleet after 2am. Seas 2 to 3 ft.
Friday
ENE wind 10 to 15 kt. Rain, snow, and sleet before noon, then a chance of rain and sleet between noon and 1pm. Seas 3 to 4 ft.
Friday Night
Variable winds 5 kt or less. Cloudy. Seas 4 to 5 ft.
Saturday
SSW wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. Mostly cloudy. Seas around 5 ft.
Saturday Night
SSW wind 10 to 15 kt becoming W after midnight. A chance of rain. Seas around 5 ft.
Sunday
W wind 5 to 10 kt. Mostly sunny. Seas 3 to 4 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: 1:48 am EST Mar 4, 2026
Forecast Valid: 2am EST Mar 4, 2026-6pm EDT Mar 10, 2026
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