ROCKVILLE, MARYLAND

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Elevation: 415 feet Latitude: 39 06N Longitude: 077 06W

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DAILY WEATHER AVERAGE - DECEMBER 13

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	35.6 ^°F	43.4 ^°F	27.6 ^°F	69.8 ^°F (2015)	15.8 ^°F (2013)
Dewpoint	24.9 ^°F	32 ^°F	18.2 ^°F	57.2 ^°F (2015)	3.2 ^°F (2012)
Humidity	67.2 ^%	89.8 ^%	43.7 ^%		34 ^% (2012)
Barometer	30.16 ⁱⁿ	30.28 ⁱⁿ	30.05 ⁱⁿ	30.49 ⁱⁿ (2008)	29.27 ⁱⁿ (2010)
Wind Speed	5 ^mph	12 ^mph		28.8 ^mph (2010)
Wind Gust		23.9 ^mph		38 ^mph (2010)
Precipitation	0.68 ⁱⁿ			1.25 ⁱⁿ (2009)

Weather Element	Average
Visibility	8.6 ^mi
Wind Direction	SSE (151.9 °)

Weather Element	Total
Heating Degree Days	29.5 (Base 18.3)
Growing Degree Days	9 (Base 10)

Total Years on Record: 9

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