RESTON, VIRGINIA

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Elevation: 88 meters Latitude: 38 57N Longitude: 077 27W

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DAILY WEATHER AVERAGE - 20 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	1.6 ^°C	5.4 ^°C	-2.9 ^°C	15.6 ^°C (1997)	-12.2 ^°C (2004)
Dewpoint	-5.6 ^°C	-2.3 ^°C	-8.3 ^°C	12 ^°C (2002)	-23.3 ^°C (2005)
Humidity	62.2 ^%	81.1 ^%	45.3 ^%		23 ^% (2005)
Barometer	1019.6 ^hPa	1023.7 ^hPa	1015.2 ^hPa	1036.9 ^hPa (2015)	998.6 ^hPa (2002)
Wind Speed	12.4 ^km/h	24.8 ^km/h		44.4 ^km/h (2004)
Wind Gust		46.8 ^km/h		64.9 ^km/h (2004)
Precipitation	14.22 ^mm			21.08 ^mm (2002)

Weather Element	Average
Visibility	15.4 ^km
Wind Direction	SW (229.4 °)

Weather Element	Total
Heating Degree Days	17.1 (Base 18.3)
Growing Degree Days	0.3 (Base 10)

Total Years on Record: 20

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