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United States of America

HERNDON, VIRGINIA


Home > North America > United States > Virginia
Elevation: 98 meters     Latitude: 38 57N     Longitude: 077 27W

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DAILY WEATHER AVERAGE - 3 OCTOBER
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[ °F ]   °C
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 16.6 °C 22.8 °C 10.6 °C 30 °C (2002) -0.6 °C (2003)
Dewpoint 11.4 °C 14.5 °C 8.2 °C 21.1 °C (2002) -1.1 °C (2009)
Humidity 74.8 % 96 % 49.2 % 32 % (2009)
Barometer 1019 hPa 1021.3 hPa 1016.3 hPa 1029.8 hPa (2005) 1005.8 hPa (2014)
Wind Speed 8.2 km/h 19 km/h 31.5 km/h (1996)
Wind Gust 33 km/h 48.1 km/h (1996)
Precipitation 3.81 mm 10.16 mm (2015)
Weather ElementAverage
Visibility13.8 km
Wind DirectionSSE (170.9 °)
Weather ElementTotal
Heating Degree Days5.4 (Base 18.3)
Cooling Degree Days2.2 (Base 18.3)
Growing Degree Days7.7 (Base 10)
Total Years on Record: 20
WEATHER CONDITIONS BREAKOUT
WIND DIRECTION BREAKOUT




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