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 - DECEMBER 15, 2014

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[ °C ] °F

Weather Element	Average	High	Low
Temperature	43.9 ^°F	57 ^°F (2:52 pm)	35.1 ^°F (11:52 pm)
Dewpoint	37.2 ^°F	39.9 ^°F (10:52 am)	33.1 ^°F (12:52 am)
Humidity	79.2 ^%	100 ^% (11:52 pm)	53 ^% (2:52 pm)
Barometer	30.07 ⁱⁿ	30.11 ⁱⁿ (9:52 am)	30.03 ⁱⁿ (12:52 am)
Wind Speed	2.3 ^mph	9.2 ^mph (3:52 pm)

Weather Element	Average
Visibility	9.8 ^mi
Wind Direction	E (88.5 °)

Weather Element	Total
Precipitation	---
Heating Degree Days	19 (Base 65)

Averaged from 26 records on December 15, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - DECEMBER 15, 2014

[ °C ] °F

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Conditions
12:52 AM	36.0 ^°F	33.1 ^°F	89 ^%	30.03 ⁱⁿ	10.0 ^mi	Calm		Clear
1:52 AM	36.0 ^°F	34.0 ^°F	93 ^%	30.05 ⁱⁿ	10.0 ^mi	Calm		Partly Cloudy
2:52 AM	37.0 ^°F	34.0 ^°F	89 ^%	30.06 ⁱⁿ	10.0 ^mi	Calm		Mostly Cloudy
3:52 AM	37.0 ^°F	35.1 ^°F	93 ^%	30.06 ⁱⁿ	10.0 ^mi	Calm		Overcast
4:18 AM	37.4 ^°F	35.6 ^°F	93 ^%	30.06 ⁱⁿ	10.0 ^mi	Calm		Overcast
4:52 AM	39.0 ^°F	36.0 ^°F	89 ^%	30.08 ⁱⁿ	10.0 ^mi	South (190°)	3.5 ^mph	Overcast
5:52 AM	39.9 ^°F	37.0 ^°F	89 ^%	30.09 ⁱⁿ	10.0 ^mi	Calm		Overcast
6:52 AM	39.9 ^°F	37.0 ^°F	89 ^%	30.09 ⁱⁿ	10.0 ^mi	SW (220°)	3.5 ^mph	Overcast
7:30 AM	39.2 ^°F	37.4 ^°F	93 ^%	30.09 ⁱⁿ	10.0 ^mi	Calm		Overcast
7:52 AM	39.9 ^°F	37.0 ^°F	89 ^%	30.10 ⁱⁿ	10.0 ^mi	SSW (200°)	4.6 ^mph	Overcast
8:52 AM	43.0 ^°F	37.9 ^°F	82 ^%	30.10 ⁱⁿ	10.0 ^mi	SSE (160°)	3.5 ^mph	Overcast
9:52 AM	46.9 ^°F	39.0 ^°F	74 ^%	30.11 ⁱⁿ	10.0 ^mi	SW (220°)	3.5 ^mph	Mostly Cloudy
10:52 AM	53.1 ^°F	39.9 ^°F	61 ^%	30.11 ⁱⁿ	10.0 ^mi	NNW (340°)	6.9 ^mph	Mostly Cloudy
11:52 AM	55.0 ^°F	39.9 ^°F	57 ^%	30.07 ⁱⁿ	10.0 ^mi	Variable	3.5 ^mph	Partly Cloudy
12:52 PM	55.9 ^°F	39.9 ^°F	55 ^%	30.05 ⁱⁿ	10.0 ^mi	Calm		Partly Cloudy
1:52 PM	55.9 ^°F	39.9 ^°F	55 ^%	30.03 ⁱⁿ	10.0 ^mi	Calm		Partly Cloudy
2:52 PM	57.0 ^°F	39.9 ^°F	53 ^%	30.03 ⁱⁿ	10.0 ^mi	Calm		Partly Cloudy
3:52 PM	55.0 ^°F	39.9 ^°F	57 ^%	30.04 ⁱⁿ	10.0 ^mi	South (190°)	9.2 ^mph	Partly Cloudy
4:52 PM	51.1 ^°F	37.9 ^°F	61 ^%	30.04 ⁱⁿ	10.0 ^mi	South (190°)	4.6 ^mph	Partly Cloudy
5:52 PM	46.0 ^°F	37.9 ^°F	73 ^%	30.06 ⁱⁿ	10.0 ^mi	SSW (210°)	4.6 ^mph	Scattered Clouds
6:52 PM	42.1 ^°F	37.0 ^°F	82 ^%	30.06 ⁱⁿ	10.0 ^mi	SE (140°)	3.5 ^mph	Scattered Clouds
7:52 PM	43.0 ^°F	37.0 ^°F	80 ^%	30.08 ⁱⁿ	10.0 ^mi	Calm		Clear
8:52 PM	39.0 ^°F	36.0 ^°F	89 ^%	30.07 ⁱⁿ	10.0 ^mi	ESE (120°)	3.5 ^mph	Mostly Cloudy
9:52 PM	41.0 ^°F	37.0 ^°F	86 ^%	30.06 ⁱⁿ	10.0 ^mi	ESE (120°)	4.6 ^mph	Mostly Cloudy
10:52 PM	41.0 ^°F	37.9 ^°F	89 ^%	30.06 ⁱⁿ	9.0 ^mi	Calm		Mostly Cloudy
11:52 PM	35.1 ^°F	35.1 ^°F	100 ^%	30.06 ⁱⁿ	7.0 ^mi	Calm		Mostly Cloudy

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