Point Forecast: 21NM NE Hyannis MA
 41.88N 69.97W (Elev. 15 m)
Last Update: 8:36 am EDT Jul 18, 2026
Tabular Forecast
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Weather ElementsMarine WeatherAviation Weather
Temperature (°C)
Dewpoint (°C)
Heat Index (°C)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)

Rain
Thunder
Fog
Swell Period
Swell Hgt/Dir
Swell 2 Period
Wind Wave Height
Significant Wave Height
Freezing Spray
Ceiling Height
Visibility
Thunder Potential

48-Hour Period Starting:       Back 2 Days  

Date07/1807/19
Hour (EDT)111213141516171819202122230001020304050607080910
Surface Wind (km/h)162123242424262626262626262626262423232121182121
Wind DirSSSSSSWSSWSSWSSWSSWSSWSSWSSWSSWSSWSWSWSWSWSWSWWSWWSWWNWNW
Gust515151
Significant Wave Height (m) 000000000000000000000000
Wave Direction (°)
Swell Height (m)
Swell Dir
Swell Period (sec) 000000000000000000000000
Swell 2 Period (sec) 000000000000000000000000
Wind Wave Height (m) 000000000000000000000000

Date07/20
Hour (EDT)111213141516171819202122230001020304050607080910
Surface Wind (km/h)21211816141311108888101011111110101010101010
Wind DirNWNWNWNWNWWNWWNWWNWWNWWWWNWNWNWNWNWNWNWNWNWNWNWNWNW
Gust
Significant Wave Height (m) 000000000000000000000000
Wave Direction (°)
Swell Height (m)
Swell Dir
Swell Period (sec) 000000000000000000000000
Swell 2 Period (sec) 000000000000000000000000
Wind Wave Height (m) 000000000000000000000000

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