National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Wednesday

      Wednesday:ENE wind 12 to 15 kt decreasing to 10 to 13 kt in the afternoon. Winds could gust as high as 25 kt. A chance of rain, mainly after 2pm. Patchy fog between 1pm and 2pm, then Patchy fog after 3pm. Seas 1 ft or less.

      High: 41 °F

      ENE 15kt⇓
      < 1ft

    • Wednesday Night

      Wednesday Night:SE wind 5 to 8 kt becoming SSW 10 to 15 kt after midnight. Winds could gust as high as 25 kt. A chance of rain, with thunderstorms also possible after 11pm. Areas of fog. Seas 1 ft or less.

      Low: 41 °FRising Temperatures

      ⇑SSW 15kt
      < 1ft

    • Thursday

      Thursday:W wind around 15 kt, with gusts as high as 30 kt. A chance of rain. Patchy fog before 9am. Seas 1 ft or less.

      High: 48 °FFalling Temperatures

      W 15kt
      < 1ft

    • Thursday Night

      Thursday Night:WNW wind around 15 kt, with gusts as high as 25 kt. Mostly cloudy during the early evening, then gradual clearing. Seas 1 ft or less.

      Low: 30 °F

      WNW 15kt
      < 1ft

    • Friday

      Friday:W wind 10 to 15 kt becoming SSW in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas 1 ft or less.

      High: 42 °FFalling Temperatures

      SSW 15kt
      < 1ft

    • Friday Night

      Friday Night:S wind around 15 kt, with gusts as high as 30 kt. A chance of rain and snow between 8pm and 9pm, then a chance of rain after 9pm. Seas 1 ft or less.

      Low: 37 °F

      S 15kt
      < 1ft

    • Saturday

      Saturday:W wind around 20 kt, with gusts as high as 35 kt. Partly 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:WNW wind 5 to 10 kt becoming ESE in the afternoon. Mostly cloudy. Seas 1 ft or less.

      High: 42 °FFalling Temperatures

      SSE 10kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:28 am EDT Mar 11, 2026
Forecast Valid: 3am EDT Mar 11, 2026-6pm EDT Mar 17, 2026

View Nearby Observations

Detailed Forecast


Wednesday
ENE wind 12 to 15 kt decreasing to 10 to 13 kt in the afternoon. Winds could gust as high as 25 kt. A chance of rain, mainly after 2pm. Patchy fog between 1pm and 2pm, then Patchy fog after 3pm. Seas 1 ft or less.
Wednesday Night
SE wind 5 to 8 kt becoming SSW 10 to 15 kt after midnight. Winds could gust as high as 25 kt. A chance of rain, with thunderstorms also possible after 11pm. Areas of fog. Seas 1 ft or less.
Thursday
W wind around 15 kt, with gusts as high as 30 kt. A chance of rain. Patchy fog before 9am. Seas 1 ft or less.
Thursday Night
WNW wind around 15 kt, with gusts as high as 25 kt. Mostly cloudy during the early evening, then gradual clearing. Seas 1 ft or less.
Friday
W wind 10 to 15 kt becoming SSW in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
S wind around 15 kt, with gusts as high as 30 kt. A chance of rain and snow between 8pm and 9pm, then a chance of rain after 9pm. Seas 1 ft or less.
Saturday
W wind around 20 kt, with gusts as high as 35 kt. Partly 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
WNW wind 5 to 10 kt becoming ESE in the afternoon. 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 43.02°N 70.73°W
Last Update: 2:28 am EDT Mar 11, 2026
Forecast Valid: 3am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data