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20NM W Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 8:44 am EST Dec 3, 2025
Forecast Valid: 10am EST Dec 3, 2025-6pm EST Dec 9, 2025

...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE

Today

NNW wind 5 to 10 kt becoming variable and less than 5 kt in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Tonight

Variable winds less than 5 kt becoming WSW 6 to 11 kt in the evening. Winds could gust as high as 20 kt. Partly cloudy. Seas 1 ft building to 3 ft.

Thursday

WSW wind 13 to 17 kt, with gusts as high as 30 kt. A slight chance of showers between noon and 4pm. Seas around 3 ft.

Thursday Night

WNW wind 17 to 20 kt decreasing to 11 to 14 kt after midnight. Winds could gust as high as 35 kt. Mostly clear. Seas around 3 ft.

Friday

NW wind 7 to 12 kt becoming SW in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Friday Night

SW wind 9 to 12 kt becoming NW 6 to 9 kt after midnight. A slight chance of snow before 9pm, then a chance of rain. Seas around 1 ft.

Saturday

ENE wind 6 to 9 kt becoming WSW in the afternoon. A chance of rain. Seas around 1 ft.

Saturday Night

W wind around 9 kt. A chance of rain. Seas around 1 ft.

Sunday

NW wind 9 to 11 kt. Mostly sunny. 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.