DULLES, VIRGINIA

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

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DAILY WEATHER AVERAGE - AUGUST 13

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	76.1 ^°F	85.8 ^°F	67.4 ^°F	98.1 ^°F (2002)	53.1 ^°F (2006)
Dewpoint	65.2 ^°F	70 ^°F	60.3 ^°F	79 ^°F (2002)	44.1 ^°F (2007)
Humidity	72 ^%	92.3 ^%	48.9 ^%		23 ^% (2007)
Barometer	29.98 ⁱⁿ	30.05 ⁱⁿ	29.91 ⁱⁿ	30.33 ⁱⁿ (2003)	29.73 ⁱⁿ (2008)
Wind Speed	6 ^mph	14.5 ^mph		34.5 ^mph (2013)
Wind Gust		25.9 ^mph		44.9 ^mph (2013)
Precipitation	1.02 ⁱⁿ			3.58 ⁱⁿ (2003)

Weather Element	Average
Visibility	7.7 ^mi
Wind Direction	SSW (190.7 °)

Weather Element	Total
Cooling Degree Days	11.6 (Base 18.3)
Growing Degree Days	26.6 (Base 10)

Total Years on Record: 20

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