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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Today

      Today:W wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. A slight chance of rain after 5pm.   Seas 2 to 3 ft.

      High: 47 °F

      ⇑S 10kt
      2-3ft

    • Tonight

      Tonight:SSW wind 12 to 15 kt becoming WSW 10 to 13 kt after midnight. Winds could gust as high as 20 kt. Rain likely, mainly before 1am.   Seas around 3 ft.

      Low: 38 °F

      SSW 15kt⇓
      3ft

    • Saturday

      Saturday:NW wind 10 to 13 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 20 kt. A slight chance of rain before 8am.   Seas 2 to 3 ft.

      High: 46 °F

      ⇑NW 15kt
      2-3ft

    • Saturday Night

      Saturday Night:NW wind 5 to 10 kt. Increasing clouds. Seas around 2 ft.

      Low: 35 °F

      NW 10kt
      2ft

    • Sunday

      Sunday:SSE wind 5 to 10 kt. A chance of rain before 7am, then rain and snow likely between 7am and 2pm, then rain likely after 2pm.   Seas around 2 ft.

      High: 42 °F

      SSE 10kt
      2ft

    • Sunday Night

      Sunday Night:NNE wind around 10 kt. Rain likely before 11pm, then rain and snow likely.   Seas 2 to 3 ft.

      Low: 32 °F

      NNE 10kt
      2-3ft

    • Monday

      Monday:NNE wind 10 to 15 kt. Snow likely, possibly mixed with rain before 3pm, then a chance of snow.   Seas around 3 ft.

      High: 38 °F

      NNE 15kt
      3ft

    • Monday Night

      Monday Night:N wind around 10 kt. Mostly cloudy. Seas 3 to 4 ft.

      Low: 27 °F

      N 10kt
      3-4ft

    • Tuesday

      Tuesday:NNW wind around 10 kt becoming W in the afternoon. Sunny. Seas around 4 ft.

      High: 38 °F

      NNW 10kt
      4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:12 am EDT Mar 20, 2026
Forecast Valid: 5am EDT Mar 20, 2026-6pm EDT Mar 26, 2026

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Detailed Forecast


Today
W wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. A slight chance of rain after 5pm. Seas 2 to 3 ft.
Tonight
SSW wind 12 to 15 kt becoming WSW 10 to 13 kt after midnight. Winds could gust as high as 20 kt. Rain likely, mainly before 1am. Seas around 3 ft.
Saturday
NW wind 10 to 13 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 20 kt. A slight chance of rain before 8am. Seas 2 to 3 ft.
Saturday Night
NW wind 5 to 10 kt. Increasing clouds. Seas around 2 ft.
Sunday
SSE wind 5 to 10 kt. A chance of rain before 7am, then rain and snow likely between 7am and 2pm, then rain likely after 2pm. Seas around 2 ft.
Sunday Night
NNE wind around 10 kt. Rain likely before 11pm, then rain and snow likely. Seas 2 to 3 ft.
Monday
NNE wind 10 to 15 kt. Snow likely, possibly mixed with rain before 3pm, then a chance of snow. Seas around 3 ft.
Monday Night
N wind around 10 kt. Mostly cloudy. Seas 3 to 4 ft.
Tuesday
NNW wind around 10 kt becoming W in the afternoon. Sunny. Seas around 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: 2:12 am EDT Mar 20, 2026
Forecast Valid: 5am EDT Mar 20, 2026-6pm EDT Mar 26, 2026
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