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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 - 1 OCTOBER
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[ °F ]   °C
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 15.4 °C 21.7 °C 9.7 °C 27.8 °C (2002) 5 °C (1999)
Dewpoint 10.6 °C 13.7 °C 6.9 °C 18.9 °C (1998) -5 °C (1998)
Humidity 76 % 96.3 % 49.3 % 22 % (1998)
Barometer 1017.9 hPa 1020.7 hPa 1015.2 hPa 1031.5 hPa (2007) 1000.7 hPa (2010)
Wind Speed 9.3 km/h 21.1 km/h 42.6 km/h (1998)
Wind Gust 39.4 km/h 55.5 km/h (2010)
Precipitation 7.62 mm 21.34 mm (2011)
Weather ElementAverage
Visibility13.7 km
Wind DirectionSSW (213.6 °)
Weather ElementTotal
Heating Degree Days3.8 (Base 18.3)
Cooling Degree Days1.1 (Base 18.3)
Growing Degree Days5.7 (Base 10)
Total Years on Record: 20
WEATHER CONDITIONS BREAKOUT
WIND DIRECTION BREAKOUT




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