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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:ENE wind around 10 kt. Rain and possibly a thunderstorm.  Areas of fog after 7pm.  Seas around 3 ft.

      Low: 47 °F

      ENE 10kt
      3ft

    • Friday

      Friday:NE wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Rain, mainly before 2pm.  Patchy fog before 9am.  Seas 3 ft building to 5 ft.

      High: 53 °F

      NE 10kt⇓
      Waves Building5ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Mostly cloudy during the early evening, then gradual clearing. Seas around 5 ft.

      Low: 48 °F

      Light Wind
      5ft

    • Saturday

      Saturday:Variable winds 5 kt or less. Sunny. Seas 4 to 5 ft.

      High: 67 °F

      Light Wind
      4-5ft

    • Saturday Night

      Saturday Night:SSW wind 5 to 10 kt. Partly cloudy. Seas around 4 ft.

      Low: 55 °F

      SSW 10kt
      4ft

    • Sunday

      Sunday:W wind 5 to 10 kt. Sunny. Seas 2 to 3 ft.

      High: 71 °F

      W 10kt
      2-3ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. Mostly clear. Seas around 2 ft.

      Low: 52 °F

      Light Wind
      2ft

    • Monday

      Monday:Variable winds 5 kt or less. Mostly sunny. Seas around 1 ft.

      High: 61 °F

      Light Wind
      1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.

      Low: 52 °F

      Light Wind
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:40 pm EDT May 14, 2026
Forecast Valid: 6pm EDT May 14, 2026-6pm EDT May 21, 2026

View Nearby Observations

Detailed Forecast


Tonight
ENE wind around 10 kt. Rain and possibly a thunderstorm. Areas of fog after 7pm. Seas around 3 ft.
Friday
NE wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Rain, mainly before 2pm. Patchy fog before 9am. Seas 3 ft building to 5 ft.
Friday Night
Variable winds 5 kt or less. Mostly cloudy during the early evening, then gradual clearing. Seas around 5 ft.
Saturday
Variable winds 5 kt or less. Sunny. Seas 4 to 5 ft.
Saturday Night
SSW wind 5 to 10 kt. Partly cloudy. Seas around 4 ft.
Sunday
W wind 5 to 10 kt. Sunny. Seas 2 to 3 ft.
Sunday Night
Variable winds 5 kt or less. Mostly clear. Seas around 2 ft.
Monday
Variable winds 5 kt or less. Mostly sunny. Seas around 1 ft.
Monday Night
Variable winds 5 kt or less. Partly 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: 2:40 pm EDT May 14, 2026
Forecast Valid: 6pm EDT May 14, 2026-6pm EDT May 21, 2026
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