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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 - 31 MARCH
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[ °F ]   °C
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 9.7 °C 15.3 °C 3.8 °C 28.9 °C (1998) -2.8 °C (2003)
Dewpoint 2.3 °C 5.6 °C -0.8 °C 15.6 °C (1998) -8.3 °C (1999)
Humidity 65.1 % 86.6 % 44.1 % 15 % (1999)
Barometer 1015.6 hPa 1019 hPa 1011.9 hPa 1035.9 hPa (2008) 1001.4 hPa (2015)
Wind Speed 13.7 km/h 27 km/h 55.5 km/h (2003)
Wind Gust 50.4 km/h 76 km/h (1997)
Precipitation 4.83 mm 15.49 mm (2002)
Weather ElementAverage
Visibility14.8 km
Wind DirectionSSW (189.8 °)
Weather ElementTotal
Heating Degree Days9.5 (Base 18.3)
Cooling Degree Days5 (Base 18.3)
Growing Degree Days3.8 (Base 10)
Total Years on Record: 21
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WIND DIRECTION BREAKOUT




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