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United States of America

DULLES, VIRGINIA


Home > North America > United States > Virginia
Elevation: 290 feet     Latitude: 38 57N     Longitude: 077 27W

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DAILY WEATHER AVERAGE - AUGUST 16
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[ °C ]   °F
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 75.9 °F 87.2 °F 65.6 °F 99 °F (1997) 53.1 °F (2013)
Dewpoint 63.7 °F 67.7 °F 59 °F 77 °F (2010) 45 °F (2008)
Humidity 69.1 % 92.5 % 44.6 % 27 % (2008)
Barometer 30.05 in 30.10 in 29.99 in 30.26 in (1999) 29.80 in (2011)
Wind Speed 5 mph 11.5 mph 18.4 mph (2011)
Wind Gust 22.3 mph 33.4 mph (2007)
Precipitation 0.80 in 1.95 in (2005)
Weather ElementAverage
Visibility8.2 mi
Wind DirectionS (180.2 °)
Weather ElementTotal
Heating Degree Days0.5 (Base 18.3)
Cooling Degree Days12.1 (Base 18.3)
Growing Degree Days26.4 (Base 10)
Total Years on Record: 20
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WIND DIRECTION BREAKOUT




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