DULLES, VIRGINIA

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Elevation: 290 feet Latitude: 38 57N Longitude: 077 27W

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DAILY WEATHER AVERAGE - JULY 5

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	76.6 ^°F	85.7 ^°F	66.9 ^°F	99 ^°F (1999)	52 ^°F (1996)
Dewpoint	64.2 ^°F	68.2 ^°F	60 ^°F	75 ^°F (1999)	42.1 ^°F (2002)
Humidity	68.3 ^%	91.7 ^%	47 ^%		24 ^% (2002)
Barometer	29.99 ⁱⁿ	30.05 ⁱⁿ	29.94 ⁱⁿ	30.28 ⁱⁿ (2014)	29.81 ⁱⁿ (2001)
Wind Speed	6 ^mph	14 ^mph		32.2 ^mph (2005)
Wind Gust		25.3 ^mph		42.6 ^mph (2005)
Precipitation	0.99 ⁱⁿ			5.64 ⁱⁿ (2005)

Weather Element	Average
Visibility	8.4 ^mi
Wind Direction	SSW (217.9 °)

Weather Element	Total
Cooling Degree Days	11.3 (Base 18.3)
Growing Degree Days	26.3 (Base 10)

Total Years on Record: 21

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