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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:55 am EDT Jul 14, 2026
Forecast Valid: 7am EDT Jul 14, 2026-6pm EDT Jul 20, 2026

Today

SW wind 17 to 21 kt, with gusts as high as 28 kt. Sunny. Seas around 3 ft.

Tonight

WSW wind 20 to 23 kt, with gusts as high as 31 kt. Mostly clear. Seas around 4 ft.

Wednesday

WSW wind 9 to 14 kt becoming variable and less than 5 kt in the afternoon. A chance of showers and thunderstorms, mainly after 2pm. Seas 2 to 3 ft.

Wednesday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 7pm. Seas around 2 ft.

Thursday

W wind 8 to 11 kt becoming SW 11 to 14 kt in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas 1 ft building to 3 ft.

Thursday Night

WSW wind 13 to 16 kt becoming WNW 8 to 11 kt after midnight. Partly cloudy. Seas 2 to 3 ft.

Friday

NW wind 5 to 8 kt becoming N in the afternoon. Sunny. Seas around 2 ft.

Friday Night

S wind 5 to 8 kt becoming W after midnight. Partly cloudy. Seas around 2 ft.

Saturday

W wind 5 to 8 kt becoming SSW in the afternoon. Mostly sunny. 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.