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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 - APRIL 18
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[ °C ]   °F
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 55.2 °F 66.3 °F 43.3 °F 89.1 °F (2002) 30.2 °F (2014)
Dewpoint 40 °F 45.4 °F 34.8 °F 64.9 °F (2002) 14 °F (2009)
Humidity 61.6 % 87.4 % 39.4 % 16 % (2009)
Barometer 30.06 in 30.14 in 29.98 in 30.55 in (2014) 29.54 in (1997)
Wind Speed 7 mph 14.1 mph 27.6 mph (1997)
Wind Gust 24.3 mph 43.7 mph (1997)
Precipitation 0.34 in 0.51 in (2003)
Weather ElementAverage
Visibility9.8 mi
Wind DirectionSSW (209.5 °)
Weather ElementTotal
Heating Degree Days13.8 (Base 18.3)
Cooling Degree Days6.6 (Base 18.3)
Growing Degree Days11.1 (Base 10)
Total Years on Record: 21
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