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Hazardous Weather Conditions

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Gray/Portland, ME Local Forecast Office

10NM S Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Today

      Today:SSW wind 10 to 15 kt, with gusts as high as 20 kt. Rain likely, mainly after 5pm. Seas around 2 ft.

      High: 45 °F

      SSW 15kt
      2ft

    • Tonight

      Tonight:SW wind around 15 kt, with gusts as high as 25 kt. Rain likely, mainly before 10pm. Seas 2 to 3 ft.

      Low: 32 °F

      SW 15kt
      2-3ft

    • Thursday

      Thursday:W wind 15 to 20 kt increasing to 20 to 25 kt in the afternoon. Winds could gust as high as 35 kt. Isolated showers between noon and 3pm. Seas around 2 ft.

      High: 37 °F

      ⇑W 25kt
      2ft

    • Thursday Night

      Thursday Night:W wind 20 to 25 kt, with gusts as high as 35 kt. Partly cloudy. Seas around 2 ft.

      Low: 23 °F

      W 25kt
      2ft

    • Friday

      Friday:W wind 15 to 20 kt, with gusts as high as 30 kt. Sunny. Seas 1 to 2 ft.

      High: 32 °F

      W 20kt
      1-2ft

    • Friday Night

      Friday Night:W wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 20 kt. Mostly clear. Seas around 1 ft.

      Low: 25 °F

      W 15kt⇓
      1ft

    • Saturday

      Saturday:WSW wind around 10 kt. Partly sunny. Seas around 1 ft.

      High: 34 °F

      WSW 10kt
      1ft

    • Saturday Night

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

      Low: 28 °F

      W 10kt
      1ft

    • Sunday

      Sunday:WNW wind 10 to 15 kt. A chance of snow. Seas around 1 ft.

      High: 33 °F

      WNW 15kt
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:14 am EST Dec 10, 2025
Forecast Valid: 7am EST Dec 10, 2025-6pm EST Dec 16, 2025

View Nearby Observations

Detailed Forecast


Today
SSW wind 10 to 15 kt, with gusts as high as 20 kt. Rain likely, mainly after 5pm. Seas around 2 ft.
Tonight
SW wind around 15 kt, with gusts as high as 25 kt. Rain likely, mainly before 10pm. Seas 2 to 3 ft.
Thursday
W wind 15 to 20 kt increasing to 20 to 25 kt in the afternoon. Winds could gust as high as 35 kt. Isolated showers between noon and 3pm. Seas around 2 ft.
Thursday Night
W wind 20 to 25 kt, with gusts as high as 35 kt. Partly cloudy. Seas around 2 ft.
Friday
W wind 15 to 20 kt, with gusts as high as 30 kt. Sunny. Seas 1 to 2 ft.
Friday Night
W wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 20 kt. Mostly clear. Seas around 1 ft.
Saturday
WSW wind around 10 kt. Partly sunny. Seas around 1 ft.
Saturday Night
W wind around 10 kt. Mostly cloudy. Seas around 1 ft.
Sunday
WNW wind 10 to 15 kt. A chance of snow. 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: 42.9°N 70.79°W
Last Update: 6:14 am EST Dec 10, 2025
Forecast Valid: 7am EST Dec 10, 2025-6pm EST Dec 16, 2025
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