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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 4:15 pm EDT Jul 7, 2026
Forecast Valid: 12am EDT Jul 8, 2026-6pm EDT Jul 14, 2026

Overnight

NNE wind 17 to 19 kt. Showers likely and possibly a thunderstorm. Patchy fog. Seas around 4 ft.

Wednesday

NNE wind 12 to 16 kt. A chance of showers, mainly before 7am. Patchy fog before 9am. Seas around 4 ft.

Wednesday Night

Variable winds less than 5 kt becoming WSW 5 to 9 kt in the evening. Partly cloudy. Seas around 3 ft.

Thursday

SW wind 10 to 13 kt increasing to 13 to 16 kt in the afternoon. Winds could gust as high as 22 kt. Mostly sunny. Seas around 3 ft.

Thursday Night

SW wind 13 to 15 kt, with gusts as high as 21 kt. Mostly cloudy. Seas around 3 ft.

Friday

SW wind 11 to 13 kt. A slight chance of showers after 2pm. Seas around 2 ft.

Friday Night

W wind 6 to 8 kt becoming NW after midnight. A chance of showers before 11pm. Seas around 2 ft.

Saturday

N wind 8 to 11 kt. Mostly sunny. Seas around 2 ft.

Saturday Night

Variable winds less than 5 kt becoming NNW around 6 kt after midnight. Mostly clear. 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.