HERNDON, VIRGINIA

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

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DAILY WEATHER AVERAGE - 23 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	19.4 ^°C	24.7 ^°C	13.7 ^°C	32.8 ^°C (2010)	6.1 ^°C (2014)
Dewpoint	12.6 ^°C	15.8 ^°C	9.5 ^°C	22 ^°C (2011)	1.1 ^°C (2007)
Humidity	67.6 ^%	90.2 ^%	45.2 ^%		18 ^% (2007)
Barometer	1019.3 ^hPa	1022 ^hPa	1016.3 ^hPa	1031.5 ^hPa (2008)	1005.8 ^hPa (1996)
Wind Speed	10.3 ^km/h	19.8 ^km/h		33.3 ^km/h (1996)
Wind Gust		34.9 ^km/h		42.6 ^km/h (1996)
Precipitation	30.23 ^mm			77.98 ^mm (2003)

Weather Element	Average
Visibility	15.6 ^km
Wind Direction	SSW (202.4 °)

Total Years on Record: 20

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