ROCKVILLE, MARYLAND

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

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DAILY WEATHER AVERAGE - 16 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	2.7 ^°C	6.4 ^°C	-0.6 ^°C	14 ^°C (2011)	-10 ^°C (2010)
Dewpoint	-2.4 ^°C	1.7 ^°C	-6.3 ^°C	10 ^°C (2011)	-14 ^°C (2009)
Humidity	71.1 ^%	87 ^%	54.6 ^%		35 ^% (2009)
Barometer	1017.9 ^hPa	1022.4 ^hPa	1012.9 ^hPa	1033.9 ^hPa (2008)	993.2 ^hPa (2007)
Wind Speed	9.8 ^km/h	24.5 ^km/h		46.3 ^km/h (2007)
Wind Gust		48.1 ^km/h		77.7 ^km/h (2007)
Precipitation	14.73 ^mm			39.37 ^mm (2007)

Weather Element	Average
Visibility	13 ^km
Wind Direction	S (175.1 °)

Weather Element	Total
Heating Degree Days	15.4 (Base 18.3)

Total Years on Record: 9

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