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United States of America

DULLES, VIRGINIA


Home > North America > United States > Virginia
Elevation: 88 meters     Latitude: 38 57N     Longitude: 077 27W

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DAILY WEATHER AVERAGE - 21 MAY
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[ °F ]   °C
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 17.5 °C 23.3 °C 11.5 °C 33.3 °C (1996) 3.3 °C (2002)
Dewpoint 10.9 °C 13.5 °C 8.1 °C 21.1 °C (1996) -2.8 °C (2009)
Humidity 69.6 % 91.9 % 45.5 % 28 % (2009)
Barometer 1015.6 hPa 1017.9 hPa 1013.2 hPa 1028.1 hPa (2002) 1000.3 hPa (2008)
Wind Speed 9.8 km/h 22.9 km/h 44.4 km/h (2004)
Wind Gust 39.3 km/h 64.9 km/h (2008)
Precipitation 20.07 mm 52.32 mm (2004)
Weather ElementAverage
Visibility13.5 km
Wind DirectionSSW (202.2 °)
Weather ElementTotal
Heating Degree Days3.8 (Base 18.3)
Cooling Degree Days3.8 (Base 18.3)
Growing Degree Days7.9 (Base 10)
Total Years on Record: 20
WEATHER CONDITIONS BREAKOUT
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