MARTHA'S VINEYARD, MASSACHUSETTS

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Elevation: 6 meters Latitude: 41 21N Longitude: 070 31W

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DAILY WEATHER AVERAGE - 20 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	2.4 ^°C	5.8 ^°C	-1.9 ^°C	13.3 ^°C (2002)	-11.7 ^°C (2004)
Dewpoint	-2.4 ^°C	1.1 ^°C	-6.8 ^°C	12.2 ^°C (2002)	-18.3 ^°C (2011)
Humidity	72.9 ^%	86.1 ^%	57.4 ^%		40 ^% (2011)
Barometer	1013.5 ^hPa	1019 ^hPa	1008.5 ^hPa	1032.5 ^hPa (1998)	991.5 ^hPa (1995)
Wind Speed	20.1 ^km/h	32 ^km/h		62.9 ^km/h (2009)
Wind Gust		50.1 ^km/h		98.2 ^km/h (2009)
Precipitation	8.64 ^mm			39.62 ^mm (2002)

Weather Element	Average
Visibility	12.9 ^km
Wind Direction	SW (223.7 °)

Weather Element	Total
Heating Degree Days	16.3 (Base 18.3)

Total Years on Record: 20

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