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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Today

      Today:NW wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.

      High: 71 °F

      NW 15kt
      < 1ft

    • Tonight

      Tonight:WNW wind 5 to 10 kt. Clear. Seas 1 ft or less.

      Low: 59 °F

      WNW 10kt
      < 1ft

    • Monday

      Monday:Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

      High: 73 °F

      Light Wind
      < 1ft

    • Monday Night

      Monday Night:SSW wind 5 to 10 kt. Increasing clouds. Seas 1 ft or less.

      Low: 61 °F

      SSW 10kt
      < 1ft

    • Tuesday

      Tuesday:SSE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Mostly cloudy. Seas 1 ft or less.

      High: 70 °F

      ⇑SSE 15kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SE wind 10 to 15 kt, with gusts as high as 25 kt. Showers and thunderstorms likely before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am.   Seas 1 ft or less.

      Low: 63 °F

      SE 15kt
      < 1ft

    • Wednesday

      Wednesday:SSW wind 5 to 10 kt. Showers likely, then showers and possibly a thunderstorm after 2pm.   Seas 1 ft or less.

      High: 74 °F

      SSW 10kt
      < 1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Showers likely and possibly a thunderstorm.   Seas 1 ft or less.

      Low: 63 °F

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. A chance of showers.   Seas 1 ft or less.

      High: 76 °F

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:56 am EDT Jul 19, 2026
Forecast Valid: 8am EDT Jul 19, 2026-6pm EDT Jul 25, 2026

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Detailed Forecast


Today
NW wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.
Tonight
WNW wind 5 to 10 kt. Clear. Seas 1 ft or less.
Monday
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Monday Night
SSW wind 5 to 10 kt. Increasing clouds. Seas 1 ft or less.
Tuesday
SSE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Mostly cloudy. Seas 1 ft or less.
Tuesday Night
SE wind 10 to 15 kt, with gusts as high as 25 kt. Showers and thunderstorms likely before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am. Seas 1 ft or less.
Wednesday
SSW wind 5 to 10 kt. Showers likely, then showers and possibly a thunderstorm after 2pm. Seas 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Seas 1 ft or less.
Thursday
Variable winds 5 kt or less. A chance of showers. 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: 6:56 am EDT Jul 19, 2026
Forecast Valid: 8am EDT Jul 19, 2026-6pm EDT Jul 25, 2026
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