HERNDON, VIRGINIA

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Elevation: 322 feet Latitude: 38 57N Longitude: 077 27W

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DAILY WEATHER AVERAGE - FEBRUARY 17

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	35.7 ^°F	43.7 ^°F	26.4 ^°F	71.1 ^°F (2011)	7 ^°F (2007)
Dewpoint	22.6 ^°F	29.9 ^°F	15.2 ^°F	53.6 ^°F (1998)	3 ^°F (2011)
Humidity	61.9 ^%	79 ^%	43.6 ^%		26 ^% (2011)
Barometer	30.10 ⁱⁿ	30.25 ⁱⁿ	29.95 ⁱⁿ	30.63 ⁱⁿ (1997)	29.51 ⁱⁿ (1998)
Wind Speed	9.4 ^mph	17.4 ^mph		32.2 ^mph (2006)
Wind Gust		31.2 ^mph		42.6 ^mph (2013)
Precipitation	1.03 ⁱⁿ			3.58 ⁱⁿ (1998)

Weather Element	Average
Visibility	9.4 ^mi
Wind Direction	WSW (236.3 °)

Weather Element	Total
Heating Degree Days	30 (Base 18.3)
Growing Degree Days	5.5 (Base 10)

Total Years on Record: 21

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