DULLES, VIRGINIA

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

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DAILY WEATHER AVERAGE - 29 JULY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	24.5 ^°C	29.4 ^°C	19.9 ^°C	38.9 ^°C (2011)	11.7 ^°C (2014)
Dewpoint	18.8 ^°C	21.2 ^°C	16.4 ^°C	24.4 ^°C (2002)	5.6 ^°C (2011)
Humidity	73.2 ^%	92.4 ^%	52.5 ^%		27 ^% (2011)
Barometer	1015.2 ^hPa	1017.6 ^hPa	1013.2 ^hPa	1023.7 ^hPa (1996)	1005.1 ^hPa (1999)
Wind Speed	9 ^km/h	19.3 ^km/h		50.1 ^km/h (2010)
Wind Gust		37.5 ^km/h		72.3 ^km/h (2010)
Precipitation	12.95 ^mm			31.75 ^mm (2007)

Weather Element	Average
Visibility	12.9 ^km
Wind Direction	S (177.4 °)

Total Years on Record: 21

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