


NWS Forecast for: 10NM S Portsmouth NH Atlantic Ocean Issued by: National Weather Service Gray/Portland, ME Last Update: 9:56 pm EDT Jun 30, 2025 | ![]() |
Tuesday: S wind 5 to 10 kt. Scattered showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then scattered showers and thunderstorms after 3pm. Some of the storms could be severe. Areas of fog before 11am. Seas around 2 ft. Tuesday Night: SW wind around 10 kt. Scattered showers and thunderstorms before 11pm, then isolated showers. Some of the storms could be severe. Seas around 2 ft. Wednesday: Variable winds 5 kt or less. Partly sunny. Seas around 2 ft. Wednesday Night: Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft. Thursday: W wind 5 to 10 kt becoming SSW in the afternoon. Sunny. Seas around 2 ft. Thursday Night: Variable winds 5 kt or less. Mostly clear. Seas around 2 ft. Independence Day: Variable winds 5 kt or less. Sunny. Seas around 2 ft. Friday Night: Variable winds 5 kt or less. Mostly clear. Seas around 1 ft. Saturday: Variable winds 5 kt or less. Mostly sunny. Seas around 1 ft. | |
Marine Point Forecast: 42.9°N 70.79°W Associated Zone Forecast which includes this point | |
Visit your local NWS office at: https://www.weather.gov/gyx/ |