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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 5:34 am EDT Jun 30, 2026
Forecast Valid: 8am EDT Jun 30, 2026-6pm EDT Jul 6, 2026

Today

SSW wind 5 to 8 kt increasing to 10 to 13 kt in the afternoon. Patchy fog before 10am. Seas around 2 ft.

Tonight

SSW wind 13 to 17 kt. A chance of showers and thunderstorms, mainly after 3am. Seas 2 to 3 ft.

Wednesday

SW wind 17 to 19 kt, with gusts as high as 27 kt. A chance of showers and thunderstorms, mainly before 9am. Seas around 3 ft.

Wednesday Night

SW wind 17 to 19 kt. A slight chance of showers and thunderstorms. Seas around 3 ft.

Thursday

SW wind 14 to 16 kt, with gusts as high as 24 kt. Mostly sunny. Seas around 3 ft.

Thursday Night

WSW wind 13 to 16 kt, with gusts as high as 22 kt. Mostly clear. Seas 2 to 3 ft.

Friday

WSW wind 10 to 13 kt. Sunny. Seas around 2 ft.

Friday Night

WSW wind 8 to 12 kt becoming WNW after midnight. Partly cloudy. Seas around 2 ft.

Independence Day

W wind 6 to 9 kt becoming SSW in the afternoon. 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.