RESTON, VIRGINIA

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

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DAILY WEATHER AVERAGE - 17 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	3.7 ^°C	8.3 ^°C	-0.8 ^°C	18.3 ^°C (2006)	-10 ^°C (2010)
Dewpoint	-1.6 ^°C	1.2 ^°C	-4.9 ^°C	11.7 ^°C (2001)	-12.2 ^°C (1997)
Humidity	71.6 ^%	87.6 ^%	52.5 ^%		30 ^% (1997)
Barometer	1017.6 ^hPa	1022.4 ^hPa	1013.2 ^hPa	1033.9 ^hPa (2005)	995.9 ^hPa (2000)
Wind Speed	10.5 ^km/h	23.2 ^km/h		42.6 ^km/h (2007)
Wind Gust		42.6 ^km/h		70.3 ^km/h (2007)
Precipitation	12.7 ^mm			40.89 ^mm (2000)

Weather Element	Average
Visibility	13.5 ^km
Wind Direction	SSW (218.8 °)

Weather Element	Total
Heating Degree Days	14.6 (Base 18.3)

Total Years on Record: 21

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