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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:25 pm EDT May 13, 2026
Forecast Valid: 12am EDT May 14, 2026-6pm EDT May 20, 2026

Overnight

SSE wind around 14 kt. Mostly cloudy. Seas around 3 ft.

Thursday

E wind around 15 kt, with gusts as high as 22 kt. Showers, with thunderstorms also possible after 5pm. Patchy fog after 10am. Seas around 3 ft.

Thursday Night

E wind 7 to 11 kt. Showers and possibly a thunderstorm before 3am, then a chance of showers. Patchy fog. Seas around 3 ft.

Friday

E wind 7 to 10 kt becoming NE in the afternoon. Showers likely, mainly between 11am and 1pm. Patchy fog before 9am. Seas 3 to 4 ft.

Friday Night

N wind 7 to 9 kt becoming WNW after midnight. A slight chance of showers before 8pm. Seas around 4 ft.

Saturday

SW wind 10 to 13 kt increasing to 14 to 17 kt in the afternoon. Winds could gust as high as 24 kt. Sunny. Seas around 3 ft.

Saturday Night

SW wind 14 to 16 kt, with gusts as high as 22 kt. Mostly clear. Seas 3 to 4 ft.

Sunday

SW wind around 12 kt. Mostly sunny. Seas around 3 ft.

Sunday Night

WSW wind 6 to 8 kt becoming NNW after midnight. Partly cloudy. Seas around 3 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.