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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 64 °F
SSE 10kt
2ft
Wednesday
High: 66 °F
ESE 10kt
2ft
Wednesday Night
Low: 62 °F
ENE 20kt
2ft
Thursday
High: 65 °F
NNE 20kt
2-3ft
Thursday Night
Low: 63 °F
NNE 10kt
2ft
Friday
High: 68 °F
N 10kt
2ft
Friday Night
Low: 63 °F
Light Wind
1-2ft
Saturday
High: 70 °F
Light Wind
1ft
Saturday Night
Low: 65 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:35 pm EDT Jul 28, 2026
Forecast Valid: 8pm EDT Jul 28, 2026-6pm EDT Aug 4, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSE wind around 10 kt. Patchy fog after 11pm. Seas around 2 ft.

Wednesday

SE wind around 10 kt becoming E in the afternoon. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Patchy fog before 10am. Seas around 2 ft.

Wednesday Night

ENE wind 15 to 20 kt. Showers and possibly a thunderstorm. Seas around 2 ft.

Thursday

NNE wind 15 to 20 kt. Showers. Seas 2 to 3 ft.

Thursday Night

NNE wind around 10 kt. Showers likely, mainly before 8pm. Seas around 2 ft.

Friday

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

Friday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 to 2 ft.

Saturday

Variable winds 5 kt or less. Mostly sunny. Seas around 1 ft.

Saturday Night

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

*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.