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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 64 °F
Light Wind
1ft
Tonight
Low: 58 °F
⇑SE 15kt
1-2ft
Tuesday
High: 65 °F
S 10kt⇓
1-2ft
Tuesday Night
Low: 59 °F
WNW 10kt
1ft
Wednesday
High: 70 °F
W 10kt
1ft
Wednesday Night
Low: 60 °F
Light Wind
1ft
Thursday
High: 68 °F
SSE 10kt
1ft
Thursday Night
Low: 61 °F
S 10kt
1ft
Friday
High: 68 °F
S 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:30 am EDT Jun 22, 2026
Forecast Valid: 8am EDT Jun 22, 2026-6pm EDT Jun 28, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds 5 kt or less. Scattered showers, mainly after 3pm. Seas around 1 ft.

Tonight

SE wind 5 to 8 kt becoming SE 10 to 15 kt after midnight. Rain and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 1am, then rain and possibly a thunderstorm after 1am. Patchy fog after 4am. Seas 1 to 2 ft.

Tuesday

S wind 7 to 10 kt becoming NW 5 to 8 kt in the afternoon. Rain and possibly a thunderstorm before 2pm, then scattered showers, mainly between 2pm and 5pm. Patchy fog between 7am and 8am. Seas 1 to 2 ft.

Tuesday Night

W wind 5 to 10 kt becoming WNW in the evening. Mostly cloudy, then gradually becoming mostly clear. Seas around 1 ft.

Wednesday

W wind 5 to 10 kt. Sunny. Seas around 1 ft.

Wednesday Night

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

Thursday

W wind 5 to 10 kt becoming SSE in the afternoon. Mostly sunny. Seas around 1 ft.

Thursday Night

SSE wind around 10 kt becoming SSW after midnight. A chance of showers. Seas around 1 ft.

Friday

S wind around 10 kt. Showers likely. Seas around 1 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.