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20NM W Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:27 am EST Dec 4, 2025
Forecast Valid: 8am EST Dec 4, 2025-6pm EST Dec 10, 2025

...GALE WARNING IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH

Today

W wind 14 to 17 kt increasing to 19 to 22 kt in the afternoon. Winds could gust as high as 30 kt. Increasing clouds. Seas 2 to 3 ft.

Tonight

NNW wind 23 to 28 kt decreasing to 14 to 19 kt. Winds could gust as high as 35 kt. Mostly clear. Seas 2 to 3 ft.

Friday

NNW wind 5 to 9 kt becoming variable and less than 5 kt. Increasing clouds. Seas around 1 ft.

Friday Night

SSW wind around 7 kt becoming ESE after midnight. A chance of rain, mainly after 3am. Seas around 1 ft.

Saturday

ESE wind 7 to 9 kt becoming S in the afternoon. A chance of rain. Seas around 1 ft.

Saturday Night

WSW wind around 8 kt becoming NW after midnight. A chance of rain, mainly before 8pm. Seas around 1 ft.

Sunday

NW wind 7 to 9 kt. Mostly sunny. Seas around 1 ft.

Sunday Night

NNW wind 9 to 12 kt increasing to 13 to 16 kt after midnight. Mostly cloudy. Seas 1 to 2 ft.

Monday

N wind around 19 kt. Mostly sunny. Seas around 3 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.