BOSTON, MASSACHUSETTS

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

WEATHER

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DAILY WEATHER AVERAGE - 20 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	0.5 ^°C	4.3 ^°C	-2.7 ^°C	16 ^°C (2002)	-13.9 ^°C (2004)
Dewpoint	-4.7 ^°C	-0.4 ^°C	-8.3 ^°C	14.4 ^°C (2002)	-21.7 ^°C (2011)
Humidity	70.2 ^%	83.8 ^%	55.5 ^%		29 ^% (2011)
Barometer	1013.9 ^hPa	1020 ^hPa	1008.1 ^hPa	1033.2 ^hPa (1998)	991.9 ^hPa (2002)
Wind Speed	21.4 ^km/h	32.8 ^km/h		46.3 ^km/h (2002)
Wind Gust		46.7 ^km/h		62.9 ^km/h (2009)
Precipitation	13.46 ^mm			40.39 ^mm (2002)

Weather Element	Average
Visibility	11.9 ^km
Wind Direction	WSW (259 °)

Weather Element	Total
Heating Degree Days	17.6 (Base 18.3)

Total Years on Record: 20

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