HERNDON, VIRGINIA

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Elevation: 98 meters Latitude: 38 57N Longitude: 077 27W

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DAILY WEATHER AVERAGE - 28 FEBRUARY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	4.5 ^°C	9.3 ^°C	0.1 ^°C	19.4 ^°C (2011)	-10 ^°C (2015)
Dewpoint	-2.9 ^°C	0.8 ^°C	-6.8 ^°C	13.3 ^°C (2011)	-20.6 ^°C (2004)
Humidity	62.8 ^%	79.3 ^%	43.7 ^%		18 ^% (2004)
Barometer	1016.6 ^hPa	1021.7 ^hPa	1012.9 ^hPa	1046.1 ^hPa (2015)	995.6 ^hPa (1999)
Wind Speed	12.2 ^km/h	24.8 ^km/h		44.4 ^km/h (1996)
Wind Gust		43 ^km/h		53.8 ^km/h (2011)
Precipitation	11.43 ^mm			35.81 ^mm (2011)

Weather Element	Average
Visibility	13.8 ^km
Wind Direction	WSW (238.4 °)

Weather Element	Total
Heating Degree Days	13.6 (Base 18.3)
Growing Degree Days	1.3 (Base 10)

Total Years on Record: 20

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