DULLES, VIRGINIA

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

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DAILY WEATHER AVERAGE - 20 OCTOBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	12.3 ^°C	18.2 ^°C	5.2 ^°C	23.3 ^°C (1995)	(2014)
Dewpoint	6.7 ^°C	10.2 ^°C	3.2 ^°C	19.4 ^°C (1995)	-3.3 ^°C (1998)
Humidity	72.8 ^%	94.5 ^%	48.1 ^%		19 ^% (1998)
Barometer	1016.3 ^hPa	1020.3 ^hPa	1012.5 ^hPa	1027.8 ^hPa (2008)	990.9 ^hPa (2011)
Wind Speed	9 ^km/h	21.1 ^km/h		38.9 ^km/h (2006)
Wind Gust		45.7 ^km/h		98.2 ^km/h (2007)
Precipitation	7.62 ^mm			16 ^mm (2006)

Weather Element	Average
Visibility	13.7 ^km
Wind Direction	SSW (188.6 °)

Weather Element	Total
Heating Degree Days	6.7 (Base 18.3)
Growing Degree Days	2.9 (Base 10)

Total Years on Record: 20

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