BOSTON, MASSACHUSETTS

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

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DAILY WEATHER AVERAGE - 21 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	17.8 ^°C	22.1 ^°C	14.2 ^°C	27.8 ^°C (2002)	9.4 ^°C (1997)
Dewpoint	12.2 ^°C	14.8 ^°C	9.7 ^°C	21.7 ^°C (1998)	0 ^°C (2010)
Humidity	71.7 ^%	86.8 ^%	53.8 ^%		29 ^% (2010)
Barometer	1017.6 ^hPa	1020.7 ^hPa	1014.6 ^hPa	1026.4 ^hPa (2009)	1000.7 ^hPa (2014)
Wind Speed	15.3 ^km/h	24.5 ^km/h		38.9 ^km/h (2000)
Wind Gust		39.3 ^km/h		50.1 ^km/h (2000)
Precipitation	7.11 ^mm			23.88 ^mm (2008)

Weather Element	Average
Visibility	15.1 ^km
Wind Direction	SSW (192.4 °)

Total Years on Record: 21

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