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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Late Afternoon

      Late Afternoon:N wind around 25 kt, with gusts as high as 30 kt. Snow.   Seas around 10 ft.

      High: 32 °F

      N 25kt
      10ft

    • Tonight

      Tonight:NW wind 15 to 20 kt. Snow likely with patchy blowing snow before 9pm, then a slight chance of snow between 9pm and 10pm, then patchy blowing snow after 10pm.   Seas 7 ft building to 10 ft.

      Low: 22 °F

      NW 20kt
      Waves Building10ft

    • Tuesday

      Tuesday:WNW wind around 10 kt. Mostly sunny. Seas 10 ft subsiding to 8 ft.

      High: 30 °F

      WNW 10kt
      10ftWaves Subsiding

    • Tuesday Night

      Tuesday Night:WNW wind 5 to 10 kt becoming SW after midnight. Increasing clouds. Seas 7 ft subsiding to 5 ft.

      Low: 17 °F

      WNW 10kt
      7ftWaves Subsiding

    • Wednesday

      Wednesday:S wind 5 to 10 kt. Snow before noon, then rain and snow between noon and 3pm, then a chance of rain after 3pm.   Seas 3 to 4 ft.

      High: 38 °F

      S 10kt
      3-4ft

    • Wednesday Night

      Wednesday Night:SW wind 5 to 10 kt becoming W after midnight. A chance of rain before 7pm.   Seas 2 to 3 ft.

      Low: 29 °F

      WSW 10kt
      2-3ft

    • Thursday

      Thursday:W wind 5 to 10 kt. Mostly sunny. Seas 1 to 2 ft.

      High: 38 °F

      W 10kt
      1-2ft

    • Thursday Night

      Thursday Night:SW wind 5 to 10 kt becoming NNE after midnight. Snow likely.   Seas 1 to 2 ft.

      Low: 28 °F

      NNE 10kt
      1-2ft

    • Friday

      Friday:N wind 5 to 10 kt becoming WNW in the afternoon. A chance of snow.   Seas around 2 ft.

      High: 38 °F

      N 10kt
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:40 pm EST Feb 23, 2026
Forecast Valid: 5pm EST Feb 23, 2026-6pm EST Mar 2, 2026

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Detailed Forecast


Late Afternoon
N wind around 25 kt, with gusts as high as 30 kt. Snow. Seas around 10 ft.
Tonight
NW wind 15 to 20 kt. Snow likely with patchy blowing snow before 9pm, then a slight chance of snow between 9pm and 10pm, then patchy blowing snow after 10pm. Seas 7 ft building to 10 ft.
Tuesday
WNW wind around 10 kt. Mostly sunny. Seas 10 ft subsiding to 8 ft.
Tuesday Night
WNW wind 5 to 10 kt becoming SW after midnight. Increasing clouds. Seas 7 ft subsiding to 5 ft.
Wednesday
S wind 5 to 10 kt. Snow before noon, then rain and snow between noon and 3pm, then a chance of rain after 3pm. Seas 3 to 4 ft.
Wednesday Night
SW wind 5 to 10 kt becoming W after midnight. A chance of rain before 7pm. Seas 2 to 3 ft.
Thursday
W wind 5 to 10 kt. Mostly sunny. Seas 1 to 2 ft.
Thursday Night
SW wind 5 to 10 kt becoming NNE after midnight. Snow likely. Seas 1 to 2 ft.
Friday
N wind 5 to 10 kt becoming WNW in the afternoon. A chance of snow. Seas around 2 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: 1:40 pm EST Feb 23, 2026
Forecast Valid: 5pm EST Feb 23, 2026-6pm EST Mar 2, 2026
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