DULLES, VIRGINIA

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

WEATHER

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DAILY WEATHER AVERAGE - 4 MARCH

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	2.6 ^°C	8.3 ^°C	-2.2 ^°C	29 ^°C (2002)	-18 ^°C (2014)
Dewpoint	-4.7 ^°C	0.4 ^°C	-8 ^°C	24 ^°C (2002)	-21.7 ^°C (1996)
Humidity	62.9 ^%	82.1 ^%	45 ^%		19 ^% (1996)
Barometer	1018.3 ^hPa	1022.4 ^hPa	1014.2 ^hPa	1038.6 ^hPa (2011)	990.5 ^hPa (1999)
Wind Speed	14 ^km/h	25.4 ^km/h		50.1 ^km/h (1999)
Wind Gust		44.6 ^km/h		66.6 ^km/h (1999)
Precipitation	8.38 ^mm			23.11 ^mm (2008)

Weather Element	Average
Visibility	15 ^km
Wind Direction	SSW (210.2 °)

Weather Element	Total
Heating Degree Days	15.3 (Base 18.3)
Growing Degree Days	3.3 (Base 10)

Total Years on Record: 22

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