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Gray/Portland, ME Local Forecast Office

14NM NE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SSE wind around 15 km/h. Sunny. Seas 1 m or less.

      High: 22 °C

      SSE 15km/h
      < 1m

    • Tonight

      Tonight:S wind around 10 km/h. Patchy fog after 8pm.  Seas 1 m or less.

      Low: 17 °C

      S 10km/h
      < 1m

    • Tuesday

      Tuesday:S wind 10 to 15 km/h, with gusts as high as 30 km/h. Scattered showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then scattered showers and thunderstorms after 4pm. Some of the storms could be severe.  Patchy fog before 11am.  Seas 1 m or less.

      High: 26 °C

      S 15km/h
      < 1m

    • Tuesday Night

      Tuesday Night:SW wind 10 to 15 km/h. Scattered showers and thunderstorms before 11pm. Some of the storms could be severe.   Seas 1 m or less.

      Low: 20 °C

      SW 15km/h
      < 1m

    • Wednesday

      Wednesday:WSW wind around 10 km/h. Partly sunny. Seas 1 m or less.

      High: 27 °C

      WSW 10km/h
      < 1m

    • Wednesday Night

      Wednesday Night:SW wind around 10 km/h becoming W after midnight. Mostly clear. Seas 1 m or less.

      Low: 18 °C

      SW 10km/h
      < 1m

    • Thursday

      Thursday:W wind 5 to 8 km/h becoming SSW 7 to 10 km/h in the afternoon. A chance of showers after 2pm.   Seas 1 m or less.

      High: 27 °C

      ⇑SSW 10km/h
      < 1m

    • Thursday Night

      Thursday Night:W wind around 10 km/h. A chance of showers.   Seas 1 m or less.

      Low: 16 °C

      W 10km/h
      < 1m

    • Independence Day

      Independence Day:WNW wind around 10 km/h. Sunny. Seas 1 m or less.

      High: 24 °C

      WNW 10km/h
      < 1m


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:57 pm EDT Jun 30, 2025
Forecast Valid: 3pm EDT Jun 30, 2025-6pm EDT Jul 7, 2025

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Detailed Forecast


This Afternoon
SSE wind around 15 km/h. Sunny. Seas 1 m or less.
Tonight
S wind around 10 km/h. Patchy fog after 8pm. Seas 1 m or less.
Tuesday
S wind 10 to 15 km/h, with gusts as high as 30 km/h. Scattered showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then scattered showers and thunderstorms after 4pm. Some of the storms could be severe. Patchy fog before 11am. Seas 1 m or less.
Tuesday Night
SW wind 10 to 15 km/h. Scattered showers and thunderstorms before 11pm. Some of the storms could be severe. Seas 1 m or less.
Wednesday
WSW wind around 10 km/h. Partly sunny. Seas 1 m or less.
Wednesday Night
SW wind around 10 km/h becoming W after midnight. Mostly clear. Seas 1 m or less.
Thursday
W wind 5 to 8 km/h becoming SSW 7 to 10 km/h in the afternoon. A chance of showers after 2pm. Seas 1 m or less.
Thursday Night
W wind around 10 km/h. A chance of showers. Seas 1 m or less.
Independence Day
WNW wind around 10 km/h. Sunny. Seas 1 m or less.

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: 43.25°N 70.58°W
Last Update: 1:57 pm EDT Jun 30, 2025
Forecast Valid: 3pm EDT Jun 30, 2025-6pm EDT Jul 7, 2025
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