DULLES, VIRGINIA

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

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DAILY WEATHER AVERAGE - 24 JUNE

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	23.8 ^°C	29.9 ^°C	17.4 ^°C	35 ^°C (2010)	11.7 ^°C (1999)
Dewpoint	17.1 ^°C	19.8 ^°C	14.8 ^°C	23.9 ^°C (1996)	9.4 ^°C (2009)
Humidity	69.5 ^%	93.8 ^%	45 ^%		32 ^% (2009)
Barometer	1016.6 ^hPa	1018.3 ^hPa	1014.6 ^hPa	1022.7 ^hPa (2008)	1005.1 ^hPa (2011)
Wind Speed	9.2 ^km/h	21.1 ^km/h		38.9 ^km/h (1996)
Wind Gust		38.8 ^km/h		53.8 ^km/h (1996)
Precipitation	0.25 ^mm			0.25 ^mm (2004)

Weather Element	Average
Visibility	14.2 ^km
Wind Direction	SSW (202.2 °)

Weather Element	Total
Cooling Degree Days	5.3 (Base 18.3)
Growing Degree Days	13.7 (Base 10)

Total Years on Record: 20

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