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Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 40 °F
Light Wind
1ft
Tonight
Low: 27 °F
NNW 10kt
2ft
Wednesday
High: 39 °F
Light Wind
1-2ft
Wednesday Night
Low: 33 °F
S 10kt
2ft
Thursday
High: 46 °F
⇑SSE 10kt
1-2ft
Thursday Night
Low: 37 °F
S 10kt
2-3ft
Friday
High: 56 °F
S 10kt
1-2ft
Friday Night
Low: 46 °F
S 10kt
3ft
Saturday
High: 55 °F
Light Wind
4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:01 am EDT Apr 7, 2026
Forecast Valid: 5am EDT Apr 7, 2026-6pm EDT Apr 13, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds 5 kt or less. Rain and snow before 2pm, then a chance of rain. Seas around 1 ft.

Tonight

NNW wind around 10 kt, with gusts as high as 25 kt. A chance of rain showers and snow before 10pm, then a slight chance of snow showers between 10pm and 11pm. Seas around 2 ft.

Wednesday

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

Wednesday Night

S wind 5 to 10 kt becoming SSW after midnight. Clear. Seas around 2 ft.

Thursday

SSW wind 5 to 8 kt becoming SSE 7 to 10 kt in the afternoon. Sunny. Seas 1 to 2 ft.

Thursday Night

S wind 5 to 10 kt becoming SSW after midnight. Partly cloudy. Seas 2 to 3 ft.

Friday

SSW wind 5 to 10 kt becoming S in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Friday Night

S wind 5 to 10 kt becoming SW after midnight. A chance of showers. Seas around 3 ft.

Saturday

Variable winds 5 kt or less. Mostly sunny. Seas around 4 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.