GROTON, MASSACHUSETTS

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Elevation: 104 meters Latitude: 42 36N Longitude: 071 35W

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DAILY WEATHER AVERAGE - 30 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	-1.2 ^°C	2.8 ^°C	-6.7 ^°C	10 ^°C (2003)	-13.9 ^°C (2009)
Dewpoint	-7 ^°C	-2.6 ^°C	-12.6 ^°C	6.7 ^°C (2003)	-24.4 ^°C (2014)
Humidity	68.1 ^%	86.9 ^%	46.6 ^%		20 ^% (2009)
Barometer	1013.9 ^hPa	1020 ^hPa	1008.5 ^hPa	1038.6 ^hPa (2006)	975.6 ^hPa (1997)
Wind Speed	10.1 ^km/h	23.8 ^km/h		40.7 ^km/h (2008)
Wind Gust		45.9 ^km/h		66.6 ^km/h (2008)
Precipitation	3.56 ^mm			12.95 ^mm (2000)

Weather Element	Average
Visibility	13.2 ^km
Wind Direction	SSE (156.2 °)

Weather Element	Total
Heating Degree Days	20.3 (Base 18.3)

Total Years on Record: 18

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