DULLES, VIRGINIA

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

WEATHER

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DAILY WEATHER AVERAGE - 20 FEBRUARY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	3.9 ^°C	9.2 ^°C	-1.1 ^°C	19.4 ^°C (2016)	-17 ^°C (2015)
Dewpoint	-4.8 ^°C	-0.7 ^°C	-8.4 ^°C	11.7 ^°C (1996)	-26 ^°C (2011)
Humidity	56.9 ^%	78.5 ^%	37 ^%		21 ^% (2011)
Barometer	1019 ^hPa	1023.4 ^hPa	1014.2 ^hPa	1032.8 ^hPa (2015)	999.7 ^hPa (2004)
Wind Speed	13.2 ^km/h	26.4 ^km/h		44.4 ^km/h (2011)
Wind Gust		44.7 ^km/h		57.5 ^km/h (2002)
Precipitation	2.29 ^mm			6.6 ^mm (2007)

Weather Element	Average
Visibility	15.1 ^km
Wind Direction	SSW (212 °)

Weather Element	Total
Heating Degree Days	14.3 (Base 18.3)
Growing Degree Days	2.1 (Base 10)

Total Years on Record: 22

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