DULLES, VIRGINIA

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

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DAILY WEATHER AVERAGE - 29 JUNE

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	24.1 ^°C	29.4 ^°C	18.9 ^°C	38.3 ^°C (2012)	12.8 ^°C (2015)
Dewpoint	17.2 ^°C	19.7 ^°C	14.5 ^°C	23.3 ^°C (1999)	8.9 ^°C (2011)
Humidity	68.6 ^%	92.3 ^%	45.7 ^%		26 ^% (2011)
Barometer	1014.9 ^hPa	1017.3 ^hPa	1012.5 ^hPa	1024.7 ^hPa (2014)	999.7 ^hPa (2009)
Wind Speed	9.7 ^km/h	24.1 ^km/h		92.5 ^km/h (2012)
Wind Gust		40.4 ^km/h		114.7 ^km/h (2012)
Precipitation	8.38 ^mm			28.19 ^mm (2012)

Weather Element	Average
Visibility	14 ^km
Wind Direction	SSW (199.7 °)

Weather Element	Total
Cooling Degree Days	5.9 (Base 18.3)
Growing Degree Days	14.2 (Base 10)

Total Years on Record: 20

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