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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

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

      Low: 40 °F

      SW 10kt
      3ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Sunny. Seas around 2 ft.

      High: 62 °F

      Light Wind
      2ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Patchy fog.  Seas around 2 ft.

      Low: 38 °F

      Light Wind
      2ft

    • Wednesday

      Wednesday:NE wind around 10 kt. A chance of rain.  Patchy fog.  Seas 2 to 3 ft.

      High: 41 °F

      NE 10kt
      2-3ft

    • Wednesday Night

      Wednesday Night:SSE wind 10 to 15 kt becoming SSW after midnight. A chance of rain.  Patchy fog.  Seas around 3 ft.

      Low: 38 °F

      SSW 15kt
      3ft

    • Thursday

      Thursday:SW wind around 15 kt becoming W in the afternoon. A chance of rain.  Patchy fog before noon.  Seas 3 to 4 ft.

      High: 54 °F

      W 15kt
      3-4ft

    • Thursday Night

      Thursday Night:WNW wind around 15 kt, with gusts as high as 20 kt. A chance of rain and snow before 10pm.   Seas around 2 ft.

      Low: 28 °F

      WNW 15kt
      2ft

    • Friday

      Friday:WNW wind around 10 kt becoming SSW in the afternoon. Mostly sunny. Seas around 2 ft.

      High: 41 °F

      SSW 10kt
      2ft

    • Friday Night

      Friday Night:S wind around 15 kt, with gusts as high as 20 kt. A chance of snow before 11pm, then rain and snow likely between 11pm and 5am, then rain likely after 5am.   Seas 3 to 4 ft.

      Low: 34 °F

      S 15kt
      3-4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:28 pm EDT Mar 9, 2026
Forecast Valid: 6pm EDT Mar 9, 2026-6pm EDT Mar 16, 2026

View Nearby Observations

Detailed Forecast


Tonight
SW wind around 10 kt. Mostly clear. Seas around 3 ft.
Tuesday
Variable winds 5 kt or less. Sunny. Seas around 2 ft.
Tuesday Night
Variable winds 5 kt or less. Patchy fog. Seas around 2 ft.
Wednesday
NE wind around 10 kt. A chance of rain. Patchy fog. Seas 2 to 3 ft.
Wednesday Night
SSE wind 10 to 15 kt becoming SSW after midnight. A chance of rain. Patchy fog. Seas around 3 ft.
Thursday
SW wind around 15 kt becoming W in the afternoon. A chance of rain. Patchy fog before noon. Seas 3 to 4 ft.
Thursday Night
WNW wind around 15 kt, with gusts as high as 20 kt. A chance of rain and snow before 10pm. Seas around 2 ft.
Friday
WNW wind around 10 kt becoming SSW in the afternoon. Mostly sunny. Seas around 2 ft.
Friday Night
S wind around 15 kt, with gusts as high as 20 kt. A chance of snow before 11pm, then rain and snow likely between 11pm and 5am, then rain likely after 5am. Seas 3 to 4 ft.

*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: 2:28 pm EDT Mar 9, 2026
Forecast Valid: 6pm EDT Mar 9, 2026-6pm EDT Mar 16, 2026
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