GROTON, MASSACHUSETTS

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Elevation: 340 feet Latitude: 42 36N Longitude: 071 35W

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DAILY WEATHER AVERAGE - DECEMBER 20

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	29.9 ^°F	37.3 ^°F	21.5 ^°F	55.9 ^°F (2002)	1.9 ^°F (2004)
Dewpoint	21.1 ^°F	27.4 ^°F	14 ^°F	55.9 ^°F (2002)	-11 ^°F (2011)
Humidity	71.9 ^%	90.2 ^%	53.1 ^%		31 ^% (2011)
Barometer	29.98 ⁱⁿ	30.15 ⁱⁿ	29.84 ⁱⁿ	30.51 ⁱⁿ (1999)	29.30 ⁱⁿ (2002)
Wind Speed	6.6 ^mph	13.3 ^mph		21.9 ^mph (2004)
Wind Gust		25.8 ^mph		38 ^mph (2000)
Precipitation	0.64 ⁱⁿ			3.57 ⁱⁿ (2002)

Weather Element	Average
Visibility	7.5 ^mi
Wind Direction	SSE (172.7 °)

Weather Element	Total
Heating Degree Days	35.6 (Base 18.3)

Total Years on Record: 18

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