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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:27 pm EDT Jul 28, 2026
Forecast Valid: 4pm EDT Jul 28, 2026-6pm EDT Aug 4, 2026

Tonight

S wind 10 to 12 kt becoming SE after midnight. Partly cloudy. Seas 2 to 3 ft.

Wednesday

ESE wind 15 to 18 kt, with gusts as high as 24 kt. A chance of showers and thunderstorms, mainly after 2pm. Seas 3 to 4 ft.

Wednesday Night

E wind 14 to 19 kt. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Seas around 3 ft.

Thursday

E wind around 12 kt becoming NNE in the afternoon. A chance of showers and thunderstorms, mainly after 9am. Seas around 3 ft.

Thursday Night

N wind around 11 kt. A chance of showers and thunderstorms. Seas around 3 ft.

Friday

N wind 10 to 13 kt. A slight chance of showers before 7am. Seas around 3 ft.

Friday Night

N wind around 6 kt becoming NW after midnight. Partly cloudy. Seas 2 to 3 ft.

Saturday

N wind 5 to 8 kt becoming E in the afternoon. Mostly sunny. Seas around 2 ft.

Saturday Night

SW wind around 7 kt. Mostly cloudy. Seas around 2 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.