HERNDON, VIRGINIA

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

WEATHER

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Number of Records: 213,900; Date Range: 1/1/95 - 3/22/16

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WEATHER ALMANAC - OCTOBER 11, 2015

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[ °C ] °F

Weather Element	Average	High	Low
Temperature	53.5 ^°F	70 ^°F (3:52 pm)	39 ^°F (5:52 am)
Dewpoint	43.4 ^°F	48 ^°F (8:52 pm)	37 ^°F (6:52 am)
Humidity	72.7 ^%	97 ^% (1:52 am)	39 ^% (4:52 pm)
Barometer	29.99 ⁱⁿ	30.08 ⁱⁿ (12:52 am)	29.90 ⁱⁿ (4:52 pm)
Wind Speed	1.3 ^mph	5.8 ^mph (12:52 pm)

Weather Element	Average
Visibility	10 ^mi
Wind Direction	ENE (72.1 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	10.5 (Base 65)
Growing Degree Days	4.5 (Base 50)

Averaged from 24 records on October 11, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - OCTOBER 11, 2015

[ °C ] °F

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Conditions
12:52 AM	42.1 ^°F	39.9 ^°F	92 ^%	30.08 ⁱⁿ	10.0 ^mi	Calm		Clear
1:52 AM	39.9 ^°F	39.0 ^°F	97 ^%	30.06 ⁱⁿ	10.0 ^mi	Calm		Clear
2:52 AM	41.0 ^°F	39.0 ^°F	93 ^%	30.05 ⁱⁿ	10.0 ^mi	Calm		Clear
3:52 AM	41.0 ^°F	39.0 ^°F	93 ^%	30.03 ⁱⁿ	10.0 ^mi	Calm		Clear
4:52 AM	39.9 ^°F	37.9 ^°F	93 ^%	30.03 ⁱⁿ	10.0 ^mi	Calm		Clear
5:52 AM	39.0 ^°F	37.9 ^°F	96 ^%	30.04 ⁱⁿ	10.0 ^mi	Calm		Clear
6:52 AM	39.0 ^°F	37.0 ^°F	93 ^%	30.06 ⁱⁿ	10.0 ^mi	Calm		Scattered Clouds
7:52 AM	39.9 ^°F	39.0 ^°F	97 ^%	30.05 ⁱⁿ	10.0 ^mi	Calm		Mostly Cloudy
8:52 AM	48.9 ^°F	45.0 ^°F	86 ^%	30.06 ⁱⁿ	10.0 ^mi	Calm		Mostly Cloudy
9:52 AM	55.0 ^°F	46.9 ^°F	74 ^%	30.06 ⁱⁿ	10.0 ^mi	Calm		Mostly Cloudy
10:52 AM	60.1 ^°F	46.0 ^°F	60 ^%	30.05 ⁱⁿ	10.0 ^mi	NNW (330°)	3.5 ^mph	Mostly Cloudy
11:52 AM	64.0 ^°F	45.0 ^°F	50 ^%	30.03 ⁱⁿ	10.0 ^mi	NNW (330°)	4.6 ^mph	Mostly Cloudy
12:52 PM	66.0 ^°F	46.0 ^°F	48 ^%	30.01 ⁱⁿ	10.0 ^mi	NNW (330°)	5.8 ^mph	Scattered Clouds
1:52 PM	69.1 ^°F	45.0 ^°F	42 ^%	29.97 ⁱⁿ	10.0 ^mi	Calm		Scattered Clouds
2:52 PM	69.1 ^°F	44.1 ^°F	40 ^%	29.94 ⁱⁿ	10.0 ^mi	Calm		Partly Cloudy
3:52 PM	70.0 ^°F	45.0 ^°F	41 ^%	29.92 ⁱⁿ	10.0 ^mi	Calm		Partly Cloudy
4:52 PM	70.0 ^°F	44.1 ^°F	39 ^%	29.90 ⁱⁿ	10.0 ^mi	SW (220°)	5.8 ^mph	Clear
5:52 PM	68.0 ^°F	45.0 ^°F	43 ^%	29.90 ⁱⁿ	10.0 ^mi	South (190°)	3.5 ^mph	Clear
6:52 PM	60.1 ^°F	46.9 ^°F	62 ^%	29.91 ⁱⁿ	10.0 ^mi	Calm		Partly Cloudy
7:52 PM	55.9 ^°F	46.9 ^°F	72 ^%	29.91 ⁱⁿ	10.0 ^mi	South (170°)	4.6 ^mph	Clear
8:52 PM	55.9 ^°F	48.0 ^°F	75 ^%	29.92 ⁱⁿ	10.0 ^mi	SSE (160°)	3.5 ^mph	Clear
9:52 PM	54.0 ^°F	48.0 ^°F	80 ^%	29.91 ⁱⁿ	10.0 ^mi	Calm		Clear
10:52 PM	50.0 ^°F	46.0 ^°F	86 ^%	29.92 ⁱⁿ	10.0 ^mi	Calm		Clear
11:52 PM	46.9 ^°F	45.0 ^°F	93 ^%	29.91 ⁱⁿ	10.0 ^mi	Calm		Clear

Hourly data recorded from KIAD, located miles away from Herndon, Virginia