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United States of America

HERNDON, VIRGINIA


Home > North America > United States > Virginia
Elevation: 322 feet     Latitude: 38 57N     Longitude: 077 27W

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DAILY WEATHER AVERAGE - MAY 9
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[ °C ]   °F
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 63.3 °F 73.2 °F 54.1 °F 88 °F (2000) 41 °F (1995)
Dewpoint 53.5 °F 58.3 °F 47.7 °F 71.1 °F (2000) 25 °F (2010)
Humidity 73.9 % 94.3 % 50.7 % 26 % (2010)
Barometer 29.97 in 30.05 in 29.88 in 30.31 in (1996) 29.53 in (2008)
Wind Speed 6.7 mph 14.3 mph 21.9 mph (2010)
Wind Gust 23.1 mph 32.2 mph (2010)
Precipitation 1.15 in 6.02 in (2008)
Weather ElementAverage
Visibility8 mi
Wind DirectionS (183.5 °)
Weather ElementTotal
Heating Degree Days5.4 (Base 18.3)
Cooling Degree Days5.2 (Base 18.3)
Growing Degree Days13.6 (Base 10)
Total Years on Record: 21
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