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Gray/Portland, ME Local Forecast Office

5NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:WNW wind around 10 km/h. Isolated showers before 11pm.   Seas 1 m or less.

      Low: 18 °C

      WNW 10km/h
      < 1m

    • Independence Day

      Independence Day:WNW wind 10 to 15 km/h. Sunny. Seas 1 m or less.

      High: 24 °C

      WNW 15km/h
      < 1m

    • Friday Night

      Friday Night:WNW wind around 10 km/h. Mostly clear. Seas 1 m or less.

      Low: 16 °C

      WNW 10km/h
      < 1m

    • Saturday

      Saturday:W wind around 10 km/h becoming S in the afternoon. Partly sunny. Seas 1 m or less.

      High: 26 °C

      S 10km/h
      < 1m

    • Saturday Night

      Saturday Night:SW wind 10 to 15 km/h. Mostly cloudy. Seas around 1 m.

      Low: 20 °C

      SW 15km/h
      1m

    • Sunday

      Sunday:SW wind 15 to 20 km/h. Mostly sunny. Seas around 1 m.

      High: 30 °C

      SW 20km/h
      1m

    • Sunday Night

      Sunday Night:SW wind around 15 km/h. Mostly clear. Seas around 1 m.

      Low: 22 °C

      SW 15km/h
      1m

    • Monday

      Monday:SW wind 15 to 20 km/h becoming S in the afternoon. Sunny. Seas around 1 m.

      High: 29 °C

      S 20km/h
      1m

    • Monday Night

      Monday Night:SSW wind 12 to 15 km/h decreasing to 10 to 13 km/h after midnight. A chance of showers.   Seas around 1 m.

      Low: 21 °C

      SSW 15km/h⇓
      1m


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:11 pm EDT Jul 3, 2025
Forecast Valid: 10pm EDT Jul 3, 2025-6pm EDT Jul 10, 2025

View Nearby Observations

Detailed Forecast


Tonight
WNW wind around 10 km/h. Isolated showers before 11pm. Seas 1 m or less.
Independence Day
WNW wind 10 to 15 km/h. Sunny. Seas 1 m or less.
Friday Night
WNW wind around 10 km/h. Mostly clear. Seas 1 m or less.
Saturday
W wind around 10 km/h becoming S in the afternoon. Partly sunny. Seas 1 m or less.
Saturday Night
SW wind 10 to 15 km/h. Mostly cloudy. Seas around 1 m.
Sunday
SW wind 15 to 20 km/h. Mostly sunny. Seas around 1 m.
Sunday Night
SW wind around 15 km/h. Mostly clear. Seas around 1 m.
Monday
SW wind 15 to 20 km/h becoming S in the afternoon. Sunny. Seas around 1 m.
Monday Night
SSW wind 12 to 15 km/h decreasing to 10 to 13 km/h after midnight. A chance of showers. Seas around 1 m.

*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: 8:11 pm EDT Jul 3, 2025
Forecast Valid: 10pm EDT Jul 3, 2025-6pm EDT Jul 10, 2025
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