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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:SW wind around 10 kt. Mostly clear. Seas 2 to 3 ft.

      Low: 69 °F

      SW 10kt
      2-3ft

    • Monday

      Monday:SW wind 10 to 15 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.

      High: 78 °F

      S 15kt
      2ft

    • Monday Night

      Monday Night:SSW wind 10 to 15 kt. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am.   Seas 2 to 3 ft.

      Low: 68 °F

      SSW 15kt
      2-3ft

    • Tuesday

      Tuesday:SSW wind 5 to 10 kt becoming E in the afternoon. Showers likely and possibly a thunderstorm, mainly after 2pm.   Seas 1 to 2 ft.

      High: 75 °F

      SSW 10kt
      1-2ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am.   Seas 1 to 2 ft.

      Low: 64 °F

      Light Wind
      1-2ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.

      High: 69 °F

      Light Wind
      1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.

      Low: 64 °F

      Light Wind
      1ft

    • Thursday

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

      High: 68 °F

      Light Wind
      1ft

    • Thursday Night

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

      Low: 63 °F

      Light Wind
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:57 pm EDT Jul 6, 2025
Forecast Valid: 7pm EDT Jul 6, 2025-6pm EDT Jul 13, 2025

View Nearby Observations

Detailed Forecast


Tonight
SW wind around 10 kt. Mostly clear. Seas 2 to 3 ft.
Monday
SW wind 10 to 15 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.
Monday Night
SSW wind 10 to 15 kt. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Seas 2 to 3 ft.
Tuesday
SSW wind 5 to 10 kt becoming E in the afternoon. Showers likely and possibly a thunderstorm, mainly after 2pm. Seas 1 to 2 ft.
Tuesday Night
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas 1 to 2 ft.
Wednesday
Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.
Wednesday Night
Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.
Thursday
Variable winds 5 kt or less. A chance of showers. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. A chance of showers. Seas around 1 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: 42.99°N 70.62°W
Last Update: 1:57 pm EDT Jul 6, 2025
Forecast Valid: 7pm EDT Jul 6, 2025-6pm EDT Jul 13, 2025
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