ROCKVILLE, MARYLAND

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Elevation: 127 meters Latitude: 39 06N Longitude: 077 06W

WEATHER

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DAILY WEATHER AVERAGE - 4 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	5.2 ^°C	9.4 ^°C	0.3 ^°C	22 ^°C (2012)	-4 ^°C (2010)
Dewpoint	-0.9 ^°C	1.7 ^°C	-3.1 ^°C	13 ^°C (2012)	-12 ^°C (2007)
Humidity	66.6 ^%	86.7 ^%	49.2 ^%		35 ^% (2007)
Barometer	1022.7 ^hPa	1025.4 ^hPa	1019.3 ^hPa	1038.3 ^hPa (2015)	1008.1 ^hPa (2007)
Wind Speed	8.4 ^km/h	20.3 ^km/h		44.4 ^km/h (2007)
Wind Gust		36.7 ^km/h		68.6 ^km/h (2007)
Precipitation	1.78 ^mm			1.78 ^mm (2008)

Weather Element	Average
Visibility	15.3 ^km
Wind Direction	S (179.8 °)

Weather Element	Total
Heating Degree Days	13.4 (Base 18.3)
Growing Degree Days	5.5 (Base 10)

Total Years on Record: 9

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