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Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 66 °F
Light Wind
2ft
Wednesday
High: 73 °F
S 10kt
2ft
Wednesday Night
Low: 67 °F
SSW 10kt
2ft
Thursday
High: 74 °F
SSW 10kt
2ft
Thursday Night
Low: 68 °F
SSW 10kt
2-3ft
Friday
High: 74 °F
WNW 10kt
2-3ft
Friday Night
Low: 62 °F
N 10kt
2ft
Saturday
High: 70 °F
W 10kt
2ft
Saturday Night
Low: 64 °F
SSW 10kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:48 pm EDT Jul 15, 2025
Forecast Valid: 5pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Mostly clear. Seas around 2 ft.

Wednesday

SSW wind 5 to 10 kt becoming SSE in the afternoon. Mostly sunny. Seas around 2 ft.

Wednesday Night

SSW wind around 10 kt. Patchy fog. Seas around 2 ft.

Thursday

SSW wind around 10 kt. A chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Seas around 2 ft.

Thursday Night

SSW wind around 10 kt becoming WSW after midnight. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Patchy fog. Seas 2 to 3 ft.

Friday

WNW wind around 10 kt becoming NNW in the afternoon. Patchy fog before 9am. Seas 2 to 3 ft.

Friday Night

N wind 5 to 10 kt. Mostly clear. Seas around 2 ft.

Saturday

N wind 5 to 10 kt becoming W in the afternoon. Sunny. Seas around 2 ft.

Saturday Night

SSW wind around 10 kt. Mostly cloudy. Seas around 2 ft.

Winds and seas higher in and near tstms.

*Notices:

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.
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.