BOSTON, MASSACHUSETTS

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Elevation: 1 meter Latitude: 42 22N Longitude: 071 02W

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DAILY WEATHER AVERAGE - 22 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	1.6 ^°C	5.2 ^°C	-1.8 ^°C	15 ^°C (1998)	-7.8 ^°C (2008)
Dewpoint	-5.2 ^°C	-1.1 ^°C	-8.9 ^°C	14.4 ^°C (1998)	-17.2 ^°C (2009)
Humidity	63.2 ^%	77 ^%	48.7 ^%		29 ^% (2009)
Barometer	1016.9 ^hPa	1021.3 ^hPa	1012.2 ^hPa	1037.3 ^hPa (2007)	990.5 ^hPa (2012)
Wind Speed	19.2 ^km/h	30.9 ^km/h		55.5 ^km/h (2008)
Wind Gust		49.4 ^km/h		74 ^km/h (2008)
Precipitation	8.64 ^mm			31.75 ^mm (2011)

Weather Element	Average
Visibility	15.4 ^km
Wind Direction	WSW (238.4 °)

Weather Element	Total
Heating Degree Days	16.7 (Base 18.3)
Growing Degree Days	0.9 (Base 10)

Total Years on Record: 20

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