HERNDON, VIRGINIA

Home > North America > United States > Virginia
Elevation: 98 meters Latitude: 38 57N Longitude: 077 27W

WEATHER

Daily Averages

Hourly Data

SELECT A DAY

PRINT THIS DATA

[ ← Previous Day ]
DAILY WEATHER AVERAGE - 8 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	2.3 ^°C	6.9 ^°C	-1.9 ^°C	21.1 ^°C (2004)	-10.6 ^°C (2002)
Dewpoint	-3.4 ^°C	-0.3 ^°C	-6.2 ^°C	14.4 ^°C (1998)	-16.1 ^°C (2004)
Humidity	68.7 ^%	85.6 ^%	50.7 ^%		32 ^% (2004)
Barometer	1023 ^hPa	1026.8 ^hPa	1019 ^hPa	1041.7 ^hPa (2005)	1004.4 ^hPa (1996)
Wind Speed	8.9 ^km/h	20.3 ^km/h		35.2 ^km/h (2011)
Wind Gust		42.3 ^km/h		53.8 ^km/h (2011)
Precipitation	15.24 ^mm			38.61 ^mm (2013)

Weather Element	Average
Visibility	14.2 ^km
Wind Direction	SSW (197.2 °)

Weather Element	Total
Heating Degree Days	15.8 (Base 18.3)
Growing Degree Days	2.5 (Base 10)

Total Years on Record: 21

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT