For More Weather Information:

21NM NE Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:33 pm EDT Sep 10, 2026
Forecast Valid: 5pm EDT Sep 10, 2026-6pm EDT Sep 17, 2026

Tonight

WNW wind around 9 kt. Mostly clear. Seas 1 ft or less.

Friday

NNW wind 6 to 11 kt. Sunny. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. Clear. Seas 1 ft or less.

Saturday

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Saturday Night

S wind around 6 kt. Isolated showers after 5am. Seas 1 ft or less.

Sunday

S wind around 9 kt. Showers likely, mainly between 8am and 11am. Seas 1 ft or less.

Sunday Night

SSW wind around 6 kt becoming W after midnight. A chance of showers before 9pm. Seas 1 ft or less.

Monday

WNW wind 7 to 9 kt becoming N in the afternoon. Mostly sunny. Seas 1 ft or less.

Monday Night

Variable winds less than 5 kt becoming NE around 6 kt in the evening. Partly cloudy. Seas 1 ft or less.

*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.