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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:WSW wind 5 to 10 kt. Patchy fog before 3am, then Patchy fog after 5am.  Seas around 2 ft.

      Low: 48 °F

      WSW 10kt
      2ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm.  Patchy fog before 8am.  Seas 1 to 2 ft.

      High: 55 °F

      Light Wind
      1-2ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely after 11pm.   Seas around 1 ft.

      Low: 46 °F

      Light Wind
      1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. Showers likely, mainly before 7am.   Seas around 1 ft.

      High: 57 °F

      Light Wind
      1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. A chance of showers.   Seas 1 to 2 ft.

      Low: 47 °F

      Light Wind
      1-2ft

    • Friday

      Friday:Variable winds 5 kt or less. Showers likely, mainly after 5pm.   Seas 1 to 2 ft.

      High: 56 °F

      Light Wind
      1-2ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. A chance of showers before 3am.   Seas around 1 ft.

      Low: 45 °F

      Light Wind
      1ft

    • Saturday

      Saturday:NE wind 5 to 10 kt. Mostly cloudy. Seas 1 to 2 ft.

      High: 49 °F

      NE 10kt
      1-2ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

      Low: 45 °F

      Light Wind
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:41 pm EDT Apr 14, 2026
Forecast Valid: 11pm EDT Apr 14, 2026-6pm EDT Apr 21, 2026

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Detailed Forecast


Overnight
WSW wind 5 to 10 kt. Patchy fog before 3am, then Patchy fog after 5am. Seas around 2 ft.
Wednesday
Variable winds 5 kt or less. A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Patchy fog before 8am. Seas 1 to 2 ft.
Wednesday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely after 11pm. Seas around 1 ft.
Thursday
Variable winds 5 kt or less. Showers likely, mainly before 7am. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. A chance of showers. Seas 1 to 2 ft.
Friday
Variable winds 5 kt or less. Showers likely, mainly after 5pm. Seas 1 to 2 ft.
Friday Night
Variable winds 5 kt or less. A chance of showers before 3am. Seas around 1 ft.
Saturday
NE wind 5 to 10 kt. Mostly cloudy. Seas 1 to 2 ft.
Saturday Night
Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

Winds and seas higher in and near tstms.

*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: 6:41 pm EDT Apr 14, 2026
Forecast Valid: 11pm EDT Apr 14, 2026-6pm EDT Apr 21, 2026
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