RESTON, VIRGINIA

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

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DAILY WEATHER AVERAGE - 21 OCTOBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	12.2 ^°C	18.8 ^°C	5.6 ^°C	25.6 ^°C (2007)	1.7 ^°C (1997)
Dewpoint	5.9 ^°C	8.9 ^°C	2.9 ^°C	20 ^°C (1995)	-4.4 ^°C (2009)
Humidity	70 ^%	93.8 ^%	41.4 ^%		24 ^% (2009)
Barometer	1017.3 ^hPa	1020.3 ^hPa	1014.2 ^hPa	1028.1 ^hPa (2015)	1000.3 ^hPa (2003)
Wind Speed	9 ^km/h	21.1 ^km/h		40.7 ^km/h (2010)
Wind Gust		38.3 ^km/h		55.5 ^km/h (2008)
Precipitation	4.06 ^mm			7.87 ^mm (2014)

Weather Element	Average
Visibility	14.6 ^km
Wind Direction	SSW (189.5 °)

Weather Element	Total
Heating Degree Days	6.1 (Base 18.3)
Growing Degree Days	3.3 (Base 10)

Total Years on Record: 20

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