DULLES, VIRGINIA

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

WEATHER

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DAILY WEATHER AVERAGE - 3 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	22.6 ^°C	28.7 ^°C	16.9 ^°C	33.9 ^°C (2015)	10 ^°C (1995)
Dewpoint	16.1 ^°C	18.7 ^°C	13.5 ^°C	23.3 ^°C (2003)	6.7 ^°C (1995)
Humidity	70.3 ^%	92.5 ^%	45.6 ^%		24 ^% (1995)
Barometer	1015.9 ^hPa	1018.3 ^hPa	1013.5 ^hPa	1024.7 ^hPa (2004)	1002 ^hPa (2010)
Wind Speed	7.7 ^km/h	19.3 ^km/h		35.2 ^km/h (1997)
Wind Gust		32.5 ^km/h		46.3 ^km/h (1997)
Precipitation	13.97 ^mm			52.07 ^mm (2003)

Weather Element	Average
Visibility	15.4 ^km
Wind Direction	SSW (196.2 °)

Weather Element	Total
Cooling Degree Days	4.5 (Base 18.3)
Growing Degree Days	12.8 (Base 10)

Total Years on Record: 20

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