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 - 23 JULY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	25 ^°C	30.5 ^°C	20.2 ^°C	37.2 ^°C (2011)	16.1 ^°C (2000)
Dewpoint	19.3 ^°C	21.3 ^°C	16.8 ^°C	23.9 ^°C (2002)	7.2 ^°C (2007)
Humidity	73.3 ^%	94 ^%	48.8 ^%		25 ^% (2007)
Barometer	1014.2 ^hPa	1016.6 ^hPa	1012.2 ^hPa	1021.7 ^hPa (2000)	1004.4 ^hPa (2013)
Wind Speed	9.5 ^km/h	22.2 ^km/h		40.7 ^km/h (2008)
Wind Gust		38.1 ^km/h		55.5 ^km/h (2008)
Precipitation	27.94 ^mm			118.62 ^mm (2009)

Weather Element	Average
Visibility	13 ^km
Wind Direction	S (182.4 °)

Weather Element	Total
Cooling Degree Days	7.1 (Base 18.3)
Growing Degree Days	15.4 (Base 10)

Total Years on Record: 21

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT