DULLES, VIRGINIA

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

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DAILY WEATHER AVERAGE - 17 OCTOBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	13 ^°C	18.6 ^°C	6.4 ^°C	27.8 ^°C (2007)	(2014)
Dewpoint	7.4 ^°C	9.9 ^°C	4.1 ^°C	17.2 ^°C (1999)	-6.7 ^°C (2004)
Humidity	72.7 ^%	91.5 ^%	50.2 ^%		19 ^% (2004)
Barometer	1016.9 ^hPa	1020 ^hPa	1014.2 ^hPa	1030.1 ^hPa (1998)	1005.1 ^hPa (2014)
Wind Speed	10.6 ^km/h	22.2 ^km/h		37 ^km/h (2005)
Wind Gust		36.9 ^km/h		48.1 ^km/h (2005)
Precipitation	12.95 ^mm			36.07 ^mm (2009)

Weather Element	Average
Visibility	14.2 ^km
Wind Direction	SSW (206.2 °)

Total Years on Record: 20

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