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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:ENE wind around 10 kt. A chance of showers.  Patchy fog.  Seas 1 ft or less.

      High: 42 °F

      ENE 10kt
      < 1ft

    • Tonight

      Tonight:E wind 5 to 8 kt becoming S 10 to 15 kt in the evening. Winds could gust as high as 25 kt. Showers and thunderstorms likely, mainly before 3am.  Patchy dense fog before 2am.  Seas 1 ft or less.

      Low: 40 °FRising Temperatures

      ⇑S 15kt
      < 1ft

    • Thursday

      Thursday:SSW wind around 15 kt becoming W in the morning. Winds could gust as high as 30 kt. Rain showers likely before 5pm, then a chance of rain and snow showers.   Seas 1 ft or less.

      High: 50 °FFalling Temperatures

      W 15kt
      < 1ft

    • Thursday Night

      Thursday Night:WNW wind around 15 kt, with gusts as high as 25 kt. A chance of snow showers before 7pm.   Seas 1 ft or less.

      Low: 30 °F

      WNW 15kt
      < 1ft

    • Friday

      Friday:W wind 10 to 15 kt becoming S in the afternoon. Mostly sunny. Seas 1 ft or less.

      High: 42 °FFalling Temperatures

      S 15kt
      < 1ft

    • Friday Night

      Friday Night:S wind around 15 kt, with gusts as high as 25 kt. A chance of rain and snow between 11pm and 1am.   Seas 1 ft or less.

      Low: 38 °F

      S 15kt
      < 1ft

    • Saturday

      Saturday:W wind 15 to 20 kt, with gusts as high as 30 kt. Mostly sunny. Seas 1 ft or less.

      High: 44 °FFalling Temperatures

      W 20kt
      < 1ft

    • Saturday Night

      Saturday Night:W wind 10 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Seas 1 ft or less.

      Low: 29 °F

      W 15kt
      < 1ft

    • Sunday

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

      High: 41 °FFalling Temperatures

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:38 pm EDT Mar 11, 2026
Forecast Valid: 2pm EDT Mar 11, 2026-6pm EDT Mar 17, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
ENE wind around 10 kt. A chance of showers. Patchy fog. Seas 1 ft or less.
Tonight
E wind 5 to 8 kt becoming S 10 to 15 kt in the evening. Winds could gust as high as 25 kt. Showers and thunderstorms likely, mainly before 3am. Patchy dense fog before 2am. Seas 1 ft or less.
Thursday
SSW wind around 15 kt becoming W in the morning. Winds could gust as high as 30 kt. Rain showers likely before 5pm, then a chance of rain and snow showers. Seas 1 ft or less.
Thursday Night
WNW wind around 15 kt, with gusts as high as 25 kt. A chance of snow showers before 7pm. Seas 1 ft or less.
Friday
W wind 10 to 15 kt becoming S in the afternoon. Mostly sunny. Seas 1 ft or less.
Friday Night
S wind around 15 kt, with gusts as high as 25 kt. A chance of rain and snow between 11pm and 1am. Seas 1 ft or less.
Saturday
W wind 15 to 20 kt, with gusts as high as 30 kt. Mostly sunny. Seas 1 ft or less.
Saturday Night
W wind 10 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Seas 1 ft or less.
Sunday
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.

*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: 43.02°N 70.73°W
Last Update: 2:38 pm EDT Mar 11, 2026
Forecast Valid: 2pm EDT Mar 11, 2026-6pm EDT Mar 17, 2026
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