BOSTON, MASSACHUSETTS

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

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DAILY WEATHER AVERAGE - 21 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	1.3 ^°C	4.8 ^°C	-2.3 ^°C	14.4 ^°C (1999)	-14.4 ^°C (2004)
Dewpoint	-4.9 ^°C	-1 ^°C	-8.9 ^°C	13.3 ^°C (1999)	-22.2 ^°C (2006)
Humidity	65.7 ^%	78.4 ^%	51.9 ^%		21 ^% (2006)
Barometer	1015.2 ^hPa	1021 ^hPa	1009.8 ^hPa	1035.6 ^hPa (2007)	985.4 ^hPa (2012)
Wind Speed	22.9 ^km/h	34.4 ^km/h		59.2 ^km/h (2012)
Wind Gust		50.1 ^km/h		79.7 ^km/h (2012)
Precipitation	10.16 ^mm			28.19 ^mm (2012)

Weather Element	Average
Visibility	14.8 ^km
Wind Direction	WSW (236.9 °)

Weather Element	Total
Heating Degree Days	17.1 (Base 18.3)

Total Years on Record: 21

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