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21NM NE Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:48 pm EDT Apr 28, 2025
Forecast Valid: 7pm EDT Apr 28, 2025-6pm EDT May 5, 2025

Tonight

Variable winds less than 5 kt becoming SW around 6 kt in the evening. Mostly clear. Seas 1 ft or less.

Tuesday

SW wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Tuesday Night

SW wind 15 to 17 kt, with gusts as high as 27 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

WSW wind 8 to 13 kt becoming NNW in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Thursday

Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

Thursday Night

S wind 5 to 7 kt. Mostly cloudy. Seas 1 ft or less.

Friday

S wind 9 to 12 kt, with gusts as high as 22 kt. A chance of rain. Seas 1 ft or less.

Friday Night

SSW wind 9 to 11 kt, with gusts as high as 20 kt. A chance of rain. 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.