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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:59 am EST Jan 16, 2026
Forecast Valid: 11am EST Jan 16, 2026-6pm EST Jan 22, 2026

Today

W wind 18 to 23 kt, with gusts as high as 37 kt. Widespread freezing spray before noon. Sunny. Seas 4 to 5 ft.

Tonight

W wind 12 to 15 kt becoming WSW 9 to 12 kt after midnight. Winds could gust as high as 28 kt. Increasing clouds. Seas 3 to 4 ft.

Saturday

SSW wind 10 to 14 kt, with gusts as high as 21 kt. A chance of rain, mainly after 1pm. Seas around 3 ft.

Saturday Night

WSW wind 9 to 14 kt, with gusts as high as 24 kt. A slight chance of rain before 8pm, then a slight chance of rain after 5am. Seas around 3 ft.

Sunday

WSW wind 8 to 10 kt. A slight chance of rain and snow before 9am, then a chance of rain between 9am and 3pm, then snow after 3pm. Seas around 3 ft.

Sunday Night

WNW wind 8 to 12 kt, with gusts as high as 20 kt. Snow, mainly before 3am. Seas around 3 ft.

M.L.King Day

WSW wind 12 to 15 kt increasing to 18 to 21 kt in the afternoon. Winds could gust as high as 30 kt. Mostly sunny. Seas around 4 ft.

Monday Night

W wind 24 to 27 kt, with gusts as high as 35 kt. Widespread freezing spray after 4am. Partly cloudy. Seas around 4 ft.

Tuesday

W wind 22 to 25 kt, with gusts as high as 34 kt. Widespread freezing spray. 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.